I dont know. I replaced 7 thru hulls by myself with boat in the water. A few tapered plugs, grinder with cut off wheel and a flapper wheel. And a scraper which I used under water to prep hull before installing new fitting. Mask and snorkel only. Took a few days, but it can be done. If the water is warm enough :)
Tip - When you don't have a pilot hole, run the hole saw through a piece of scrap wood and lay it over the area you wish to drill. The hole in the scrap acts like a guide template and holds the saw in place.
Carpenter's hack. There's a trick you can use to drill a coaxial larger hole with a hole saw. Mount a second smaller hole saw blade that fits inside the preexisting hole onto the same drill axis. You end up with two concentric blades mounted on the drill adapter. One fits inside the hole, the outer one drills the new hole. Lots more friction but it will get the new hole started, then remove the pilot bit and drill the hole the rest of the way through.
Hammer a wooden plug in the hole from the outside (one of those emergency plugs to stop a leak). Use that as a center guide for a circular saw of the right size. :)
Great videos Josh. I am making my dream happen too! I am a 64 year old nurse, retiring in 58 days to a new to me sailboat to live aboard sailing the Gulf and Caribbean. I enjoy your videos learning many things I can take to refitting my boat Dance With Waves. Good winds!
I am amazed everyday how people can be so talented in so many ways. I can't believe you are both this entertaining, this educated on boat repair and maintenance, AND you're an officer in the USN! Whattttt? You go!! Nice work :)
Love it! Just found these as we’re all in lockdown. Loving the enthusiasm and cando attitude. USN huh? My Father learned to fly USN in ‘43. He was RN but never went to sea again after the war. He always wanted to sail. We never did. I’ve just started learning and, sat here locked down, coughing and planning the next step, your adventures are just what I needed. When we get out of this, I’m buying a boat whatever happens!! Is it me or did anyone else spend part of that video seeing someone racing through backyards to get back to his house? 😉
Always love your videos, I need to do the same thing. I will insert the non instrument spare plug provided and drill from the outside. This will hold the pilot hole and the flange on the inside will act as a backing to ensure a clean finish, won't fracture upon exit.
That's classic...I've gone thru this exercise myself. Very realistic episode! I usually let fly with more expletives but, otherwise that's a very realistic example of boat work!
Great job Josh. I chuckled when the circular saw did not work. I recently did almost exactly the same thing. No way without a pilot. :-) One minor suggestion: I also have a screw-in 'plug' next to my sender with the spinning wheel. You will need to take that sender out from time to time as it will become blocked with sea-weed and algae growth. Having the plug right next to it (I use tie-wraps to secure it) allows you to do this 'in-water' with only a small amount of water entering during the process. You are then back in business in less than 5 minutes. Looking forward to the next video!
There is a way, Patrick! Use the hole saw you want, to cut a hole through a piece of scrap wood at least 3/4" thick. Then, secure that scrap wood over the location you want to drill out. Use the scrap wood hole to keep the hole saw aligned, et viola!
Your videos are incredible! Seriously. You are super informative and the way you show your thought process is inspiring. I am going to study some of your videos for my haul out next week. Thank you, Josh!
Thanks for the vid. BTW Paul from Cleveland's comment is the magic trick and only safe way to pull off the redrilling a hole with a hole saw. Just firmly hold that scrap of plywood down long enough to get the larger hole started i.e... don't let your template flop around. It's easy peasy. Cheers.
For those hole saw sets with removable arbors, you can put two hole saws together, first the new larger hole saw size, then the hole saw that matches the existing hole for the guide.. done and done!!
Love the posts. Suggest you invest in an oscillating multi-tool. Not much $$, and great for cutting into corners and sanding tight spots too. Much faster than a dremel. For future reference: - Run hole saw backwards to get started, or... - Cut hole in scrap wood of desired size, put block over hole and use as guide to get started, or.... - Cut hole in scrap wood the size of the old hole. Take plug from old hole and put on center bit of larger hole saw. Use center bit with plug on it as pilot into old hole in hull. Best wishes on your project from an old man with lots of sawdust in his past.
Hello Josh,just put a thin plywood over the old hole(8-10mm). It must be long enough, to put one foot on the right and one in the left side of the hole to fix It in place.Now you can make a new pilot hole trough the wood and the circular saw will center exactly over the old hole.(First you must draw a Center cross over the old hole,with a permanent marker, to find the Center of the old hole ,after you put the plywood over it).Best Regards from Germany:Guido🤗😁
Greetings From Maui! Nice Hat! Yours was the first sailing video ever watched. I watched 100 since, getting ready to buy my first sail boat, and it’s exciting because I’ve never sailed before. Enjoy the heck out of your videos, if you’re ever in Maui “again” let me know I’ll buy you a beer. 🍺
JO MOL - that's awesome! Thanks for noticing the hat. I LOVE Maui. Glad you escaped the hurricane last week. Please eat a good poke bowl for me at Eskimo Candy!
Just a comment. I dealt with the same problem and found an easy solution that might be helpful to some. First I used my hole saw and drilled through a piece of 1/8" plywood which I cut to about 6" x 6" with my hole drilled to the size of the thru hull in the middle. Then I positioned the plywood (where I wanted the hole to be) on the outside of the hull so that I could direct my drill direction to be perpendicular to the hull arc at the point of penetration. Then I used some duct tape to hold the plywood in place while I used it as a drill guide. It made the whole process fairly easy.
To anyone wanting to do the same: - From the outside, hammer in a wooden plug in the thru-hull - Use a saw to cut the plug flush with the thru-hull (Japanese saw is great) - Use a hole saw with the diameter of the NEW fitting and drill through plug - The outer flange will come of first, remove it and continue sawing It can literally take 5 minutes.
Nice job overcoming! I've had to do a few holes like that (sans pilot drill bit) and there seem to be some good recommendations below. What I've generally done is put the drill on full speed and come in at a slight angle on one side of the hole, then as that begins to grab, I straighten the drill and complete the circle. Fun times! Go Army, Beat Navy!
Fr those that might come across the same issue of 'No center guide' trying to expand say a Thru-Hull like this, Hot glue a piece of plywood over the hole, mark your center and cut the hole through both plywood and hull, knock off the ply when done and clean up, Job done, no drama.
Nice video, tip: if you have do do it again, you can use a small piece of ply wood wich you glue using hot glue over the narrow hole, then make a center mark and use your hole saw. The ply wood will guide the hole saw. Regards Sebastien
Had same problem. Took scrap 1/4" plywood, drilled hole in using pilot hole drill bit and ducted taped it to outside bottom of hull with pilot hole in center. Pilot hole centered 2" hole bit until it scored a nice start. Like your dremel cut only faster and easier. Run drill counterclockwise to start hole easier.
Bit of wood inside the hull with a couple of bricks or concrete blocks on it to hold it down then drill up into the wood from the under the hull. A longer pilot drill bit can be used for thick materials too. You got there in the end 👍
Awesome video! Love the humor and the closing shot. Hey,,, I thought of this idea when I was watching sweat drip from your nose while you were working inside the boat; how about getting a cheap 20” box fan from Walmart and placing it laying down on your opened deck hatch, blowing inward. It may act kinda like a whole house fan. Just a thought.
Little piece of advice for next time: if you need to drill a thru-hole with a hole saw without a guidance hole in the center, take a piece of thin chunk wood, drill a hole in it with the hole saw and use the piece of wood as a radial guidance at the outside of the saw blade. Works fine!
Love the boat! Brother, do yourself (and me) a favor. Go pick up a couple of cheap box fans and put one at the bow hatch and the other at the main salon hatch to cool that oven off a bit! Work smart. Say 'No' to heat stroke. 😁 Just subscribed. Thanks for bringing me along on your ride. Love the content!
Agreed. On the upwind side/end have the fan on the outside blowing in. On the downwind side/end have the fan on the inside blowing out. Look up "Positive & Negative Ventilation". You're in the Navy. You learn this in Damage Control & Fire Fighting training also. As for the hole. The "Outside Pilot Hole" in a 3/4" scrape of wood is your best bet if you're working alone.
A suggestion, temporary to fill the hole and layer fiberglass over the surface then drill a new hole. Offsetting the hole away from the frame radius. Offset the new hole in encompassing the edge previous hole.
Ive had to do the same thing with a whole saw bit as well, but I wasn’t working with fiberglass. The bit walked all over the place and I made a huge mess of some aluminum.
Finaly, a realistic covered in sweat pain in the $&@; boat repair video. I thought I must have done something wrong when I rebuilt our boat, blood, lots of sweat and swearing !
In replacing my old Navman speed transducer the housing nut unscrewed and housing tapped out with a hammer. The get a tapered wooden plug, tap it into the hole and then holesaw the new hole. Exactly centred.
If you need to enlarge a thru hole stick a bung in the hole, wet it, and then cut it off nearly flush to use as a guide for your hole saws pilot drill. sand, re-fiberglass and paint around the lip of the hole to prevent de-lamination in the future. Make sure there is an electrical connection between your thru hole fittings and your zincs if you are using bronze thru holes in order to prevent corrosion in the future..
Put timber underneath ( just put a beam from the ground up to hold a timber plate in place) then you can centre a hole plus have the timber as a firm backing to stop splintering at the end using a hole saw..
Put a smaller hole saw that fits your diameter home. Place the large hole saw over top and bolt both to your drill. BINGO! Smaller saw acts as your guide
Thank you! I now use a website called Artlist for the music. I think back at the time of this video I may have used another website called Epidemic Sound. These are websites where you pay about $10 per month for music without copyright.
Glue a softwood plug into the hole with Elmer's school glue. You can then drill a center hole anywhere you want to. Drilling your finished hole will take out any school glue.
I have always loved the water. Sailing bit me along time ago after one trip out. After 2 decades I bought a 12.5 aqua cat. That was 1 year ago. This year we aquired 2 boats a older Aquarius 24 and a venture 21. The Aquarius is in better shape of the two. Both boats have swing keel came with Sails. Now just wait I g o. Papers. While cleaning vthem up.
use the holesaw to cut a plug out of scrap wood. use the plug to block the hole you want to drill. the plug will centre the arbour on the holesaw (its called an arbour not a pilot bit)
Next time try this. Get a hole saw with the diameter of the hole and cut out piece with wood, fit in there and use that as your guide. Then proceed with the size you want to cut out.
I haven't seen the other comments. But if I were putting a bigger hole in anyway I would not bother taking out the first hole. Just plug it with a wooden cone shape slightly bigger diameter than the existing hole. Cut it off level then find the centre of the cone, if you didn't already mark it, then use that to pilot drill for your new hole size circular saw. .
Holes in the bottom of any boat, in use or not are really...REALLY, bad news if you don't use it cut it out and make a correct repair, you will thank yourself for sure one day in the future. Hint for a pilot hole, hot glue a piece of 6mm ply on the inside, cut through both ply and hull, pick off the ply and job done.
Watching you sweat pained me, you need some A/C. Being from the Coast Guard I know it’s hard to find a cool place below deck sometime. I’m new to your channel as of today and I have to say you put out some very useful videos. I live and hour from Ventura Harbor in California, I’m 55 next week and I want to learn to sail and buy a boat in the next couple of years. Here’s my question Josh: is it easier to learn from a sailing school or can you pick up the same stuff crewing and helping out other sailors? I have the navigation stuff down but it’s the trimming and all the lines you use, thoughts? It seems real expensive here in So Cal for lessons. Thanks
Try starting at Leo Robbins Sailing Center at Marina park in Ventura Harbor run by the City of Ventura: very economical and world class teaching. Once you finish all of those courses including ASA 101, I highly recommend joining Santa Barbara Sailing Center for more ASA certs.
Are you at the Academy? My oldest graduated from there in 2014. He’s a helicopter pilot in Japan now. Really enjoy the videos. Just bought a Freya 39 in Langkawi and expect to be doing some work on it soon. So these videos are helpful.
Robert Dunlap - Thanks for the note. Yes, I work at USNA. But getting our of Navy soon. Very cool about your son. Congrats on your boat! Definitely a lot of work but the work is rewarding.
every animal has that mind set. its called ''being sentient.''.......... most animals form packs, they help you survive. every animal in the pack, wants to lead, only a few have the courage to fight to lead........ its called instinctive ego. . ''varying sizes, designed by ''LIFE HERSELF''..
Much better to have mounted it forward and fill those old through hulls then you have the ability of the transducer to find depth be fore you go aground a great feature
I know this is WAYYYY late... But future ref, if you need to enlarge a hole like that. Use a small thin piece of wood or whatever. Drill the pilot hole. Then place it down where you want, centering from that pilot hole. Superglue it. Then drill the bigger hole. The superglue is fragile and will break away with a tap of hammer thus removing the plywood or whatever substrate you used as sacrificial. I know... This would have been helpful then... But now you know.
I’m shocked at how mediocre those thru hulls are. And the existing transducer with a quarter twist to pull out is all that’s keeping your boat from sinking underway.
I'll never be a warfighter but I'm a reasonable engineer. Try making a wood disc with another holesaw then bevel the edge and hammer into the original hole... hey presto you now have material for your pilot drill to engage with. Way faster and safer.
If anyone is watching this..next time prop up a small piece of wood over the hole from the bottom of the boat, like plywood....then you can use the hole saw.
I always get kick out of all the safety precautions and then trusting their lives to a twist and pull out plug. The guy below had the right method but you could have also done it with a variable speed battery drill.
you're re-doing the anti fouling anyway - so hot glue a piece of wood on the outside, measure and mark out your centre point from the inside ....then proceed to hole saw.
I wish I was there to give you a hand, prob could knocked it out in less then hour, I just went through all my thru hulls replaced seacocks and through hulls had to do alot of work to make them work, the old ones where countersunk into the hull so i had to build up and cut new ones also the backing plate made me require extra long thru hulls which I had to cut to make work anywho i know i could have saved you some time on this one. Also why sand if you going to cut prob 1/8 inch to 1/4 all the way around you would have cut all the crap out. jw anywho happyboatworks :)
Love these videos. My new favorite channel. Very good mate. Keep em coming.
Thanks!
Josh Post are you still in the navy? If so what is or was your rank ! USMC
I dont know. I replaced 7 thru hulls by myself with boat in the water. A few tapered plugs, grinder with cut off wheel and a flapper wheel. And a scraper which I used under water to prep hull before installing new fitting. Mask and snorkel only. Took a few days, but it can be done. If the water is warm enough :)
Tip - When you don't have a pilot hole, run the hole saw through a piece of scrap wood and lay it over the area you wish to drill. The hole in the scrap acts like a guide template and holds the saw in place.
Yup...that's the way to do it. Just found this channel so a bit behind. Great though.
Carpenter's hack. There's a trick you can use to drill a coaxial larger hole with a hole saw. Mount a second smaller hole saw blade that fits inside the preexisting hole onto the same drill axis. You end up with two concentric blades mounted on the drill adapter. One fits inside the hole, the outer one drills the new hole. Lots more friction but it will get the new hole started, then remove the pilot bit and drill the hole the rest of the way through.
Hammer a wooden plug in the hole from the outside (one of those emergency plugs to stop a leak). Use that as a center guide for a circular saw of the right size. :)
Great videos Josh. I am making my dream happen too! I am a 64 year old nurse, retiring in 58 days to a new to me sailboat to live aboard sailing the Gulf and Caribbean. I enjoy your videos learning many things I can take to refitting my boat Dance With Waves. Good winds!
You just made drilling a hole, entertaining. I'm glad I found your channel. Good luck with the new boat.
When using hole saw start in reverse to score, works great on gelcoat to keep it from chipping :-)
I am amazed everyday how people can be so talented in so many ways. I can't believe you are both this entertaining, this educated on boat repair and maintenance, AND you're an officer in the USN! Whattttt? You go!! Nice work :)
Love it! Just found these as we’re all in lockdown. Loving the enthusiasm and cando attitude. USN huh? My Father learned to fly USN in ‘43. He was RN but never went to sea again after the war. He always wanted to sail. We never did. I’ve just started learning and, sat here locked down, coughing and planning the next step, your adventures are just what I needed. When we get out of this, I’m buying a boat whatever happens!! Is it me or did anyone else spend part of that video seeing someone racing through backyards to get back to his house? 😉
Always love your videos, I need to do the same thing. I will insert the non instrument spare plug provided and drill from the outside. This will hold the pilot hole and the flange on the inside will act as a backing to ensure a clean finish, won't fracture upon exit.
That's classic...I've gone thru this exercise myself. Very realistic episode! I usually let fly with more expletives but, otherwise that's a very realistic example of boat work!
Josh, Very informative video! My heart was pounding when the hole saw was skipping on you! Great job!
Great job Josh. I chuckled when the circular saw did not work. I recently did almost exactly the same thing. No way without a pilot. :-) One minor suggestion: I also have a screw-in 'plug' next to my sender with the spinning wheel. You will need to take that sender out from time to time as it will become blocked with sea-weed and algae growth. Having the plug right next to it (I use tie-wraps to secure it) allows you to do this 'in-water' with only a small amount of water entering during the process. You are then back in business in less than 5 minutes. Looking forward to the next video!
There is a way, Patrick! Use the hole saw you want, to cut a hole through a piece of scrap wood at least 3/4" thick. Then, secure that scrap wood over the location you want to drill out. Use the scrap wood hole to keep the hole saw aligned, et viola!
Your videos are incredible! Seriously. You are super informative and the way you show your thought process is inspiring. I am going to study some of your videos for my haul out next week. Thank you, Josh!
Great video! I especially like how the video itself felt kind of improvised, tying the theme together. Looking forward to more! /Filip from Sweden
Filip Svensson - Thanks!
Your Dremel work was impeccable. Myself like most folks can't get the hole symmetrical.
Thanks for the vid. BTW Paul from Cleveland's comment is the magic trick and only safe way to pull off the redrilling a hole with a hole saw. Just firmly hold that scrap of plywood down long enough to get the larger hole started i.e... don't let your template flop around. It's easy peasy. Cheers.
Thank You For Your Service!!God bless our country and our service members!
For those hole saw sets with removable arbors, you can put two hole saws together, first the new larger hole saw size, then the hole saw that matches the existing hole for the guide.. done and done!!
Love the posts. Suggest you invest in an oscillating multi-tool. Not much $$, and great for cutting into corners and sanding tight spots too. Much faster than a dremel.
For future reference:
- Run hole saw backwards to get started, or...
- Cut hole in scrap wood of desired size, put block over hole and use as guide to get started, or....
- Cut hole in scrap wood the size of the old hole. Take plug from old hole and put on center bit of larger hole saw. Use center bit with plug on it as pilot into old hole in hull.
Best wishes on your project from an old man with lots of sawdust in his past.
awsome ideas
Hello Josh,just put a thin plywood over the old hole(8-10mm). It must be long enough, to put one foot on the right and one in the left side of the hole to fix It in place.Now you can make a new pilot hole trough the wood and the circular saw will center exactly over the old hole.(First you must draw a Center cross over the old hole,with a permanent marker, to find the Center of the old hole ,after you put the plywood over it).Best Regards from Germany:Guido🤗😁
Greetings From Maui! Nice Hat!
Yours was the first sailing video ever watched. I watched 100 since, getting ready to buy my first sail boat, and it’s exciting because I’ve never sailed before.
Enjoy the heck out of your videos, if you’re ever in Maui “again” let me know I’ll buy you a beer. 🍺
JO MOL - that's awesome! Thanks for noticing the hat. I LOVE Maui. Glad you escaped the hurricane last week. Please eat a good poke bowl for me at Eskimo Candy!
Great video todd. 👍👍⛵💜
Just a comment. I dealt with the same problem and found an easy solution that might be helpful to some. First I used my hole saw and drilled through a piece of 1/8" plywood which I cut to about 6" x 6" with my hole drilled to the size of the thru hull in the middle. Then I positioned the plywood (where I wanted the hole to be) on the outside of the hull so that I could direct my drill direction to be perpendicular to the hull arc at the point of penetration. Then I used some duct tape to hold the plywood in place while I used it as a drill guide. It made the whole process fairly easy.
To anyone wanting to do the same:
- From the outside, hammer in a wooden plug in the thru-hull
- Use a saw to cut the plug flush with the thru-hull (Japanese saw is great)
- Use a hole saw with the diameter of the NEW fitting and drill through plug
- The outer flange will come of first, remove it and continue sawing
It can literally take 5 minutes.
I sometimes use a smaller hole saw inside the larger one as a pilot bit. Works great for me.
Jackson Lights - thanks for the tip!
Just found your channel and in this video I definitely enjoyed the music inserts. Happy sailing
Nice job overcoming! I've had to do a few holes like that (sans pilot drill bit) and there seem to be some good recommendations below. What I've generally done is put the drill on full speed and come in at a slight angle on one side of the hole, then as that begins to grab, I straighten the drill and complete the circle. Fun times! Go Army, Beat Navy!
Hope your retirement is going sweetly!
Victory loves preperation! The Mechanic
Fr those that might come across the same issue of 'No center guide' trying to expand say a Thru-Hull like this, Hot glue a piece of plywood over the hole, mark your center and cut the hole through both plywood and hull, knock off the ply when done and clean up, Job done, no drama.
Nice video, tip: if you have do do it again, you can use a small piece of ply wood wich you glue using hot glue over the narrow hole, then make a center mark and use your hole saw. The ply wood will guide the hole saw. Regards Sebastien
Had same problem. Took scrap 1/4" plywood, drilled hole in using pilot hole drill bit and ducted taped it to outside bottom of hull with pilot hole in center. Pilot hole centered 2" hole bit until it scored a nice start. Like your dremel cut only faster and easier. Run drill counterclockwise to start hole easier.
Really appreciate your knowledge and attitude! Super awesome content! You have gained a new subscriber.
Very cool. Many thanks for this comment!
My pleasure! Can't wait to see what's next!
I love your stuff. I’ve never known a military officer who cites Alan Watts!
Nice video! Keep it up and feel free to do your "how to" videos on even the menial tasks - since many of us are sailing beginners.
Very entertaining and I like your choice of music especially the Holy Grail
Very good vídeo, just watched some of your other videos and you just got an other subscriber
Great video Josh!
Bit of wood inside the hull with a couple of bricks or concrete blocks on it to hold it down then drill up into the wood from the under the hull. A longer pilot drill bit can be used for thick materials too. You got there in the end 👍
Awesome video! Love the humor and the closing shot. Hey,,, I thought of this idea when I was watching sweat drip from your nose while you were working inside the boat; how about getting a cheap 20” box fan from Walmart and placing it laying down on your opened deck hatch, blowing inward. It may act kinda like a whole house fan. Just a thought.
Really enjoying the videos, good work!
Jeffrey McNicholas - Thanks for the comment!
Little piece of advice for next time: if you need to drill a thru-hole with a hole saw without a guidance hole in the center, take a piece of thin chunk wood, drill a hole in it with the hole saw and use the piece of wood as a radial guidance at the outside of the saw blade. Works fine!
OMG! That was painful lol. Good job in the end 👌
Thumbs up for lots of English Beat music!
Love the boat! Brother, do yourself (and me) a favor. Go pick up a couple of cheap box fans and put one at the bow hatch and the other at the main salon hatch to cool that oven off a bit! Work smart. Say 'No' to heat stroke. 😁
Just subscribed. Thanks for bringing me along on your ride. Love the content!
Agreed. On the upwind side/end have the fan on the outside blowing in. On the downwind side/end have the fan on the inside blowing out.
Look up "Positive & Negative Ventilation".
You're in the Navy. You learn this in Damage Control & Fire Fighting training also.
As for the hole. The "Outside Pilot Hole" in a 3/4" scrape of wood is your best bet if you're working alone.
This video made my day *thumbs up*
Dude! Your editing skills and creativity are off the charts man! Love your videos : ) try not to chop off anything important with that drone ; P
I know I'm way late here but running the drill backward first will allow you to make the first part of the cut.
A suggestion, temporary to fill the hole and layer fiberglass over the surface then drill a new hole. Offsetting the hole away from the frame radius. Offset the new hole in encompassing the edge previous hole.
Enjoying your video's, your determination and attitude!
Ive had to do the same thing with a whole saw bit as well, but I wasn’t working with fiberglass. The bit walked all over the place and I made a huge mess of some aluminum.
Finaly, a realistic covered in sweat pain in the $&@; boat repair video. I thought I must have done something wrong when I rebuilt our boat, blood, lots of sweat and swearing !
In replacing my old Navman speed transducer the housing nut unscrewed and housing tapped out with a hammer. The get a tapered wooden plug, tap it into the hole and then holesaw the new hole. Exactly centred.
Great video! buy yourself a couple of fans for the boat... you'll need them when you're in the tropics.. one day. :) Richard // N2GBR
If you need to enlarge a thru hole stick a bung in the hole, wet it, and then cut it off nearly flush to use as a guide for your hole saws pilot drill. sand, re-fiberglass and paint around the lip of the hole to prevent de-lamination in the future. Make sure there is an electrical connection between your thru hole fittings and your zincs if you are using bronze thru holes in order to prevent corrosion in the future..
Put timber underneath ( just put a beam from the ground up to hold a timber plate in place) then you can centre a hole plus have the timber as a firm backing to stop splintering at the end using a hole saw..
Excellent tip! Thanks!
Put a smaller hole saw that fits your diameter home. Place the large hole saw over top and bolt both to your drill. BINGO!
Smaller saw acts as your guide
It's nice to see someone who sweats as much as i do
In a case like this I would use a carbide burr to enlarge the hole after marking a close fit with a Sharpie.
Great video thanks, where do you get the use of music for your videos?
Thank you! I now use a website called Artlist for the music. I think back at the time of this video I may have used another website called Epidemic Sound. These are websites where you pay about $10 per month for music without copyright.
Next time with the hole saw start in reverse to start the hole so the teeth won't bite .
Good suggestion. Unfortunately, my drill, which is from like 1950, doesn't have reverse. Time to upgrade to a new drill.
I would have drilled a new hole and glassed in the other two. Why have more holes in the hull than you need?
Glue a softwood plug into the hole with Elmer's school glue. You can then drill a center hole anywhere you want to. Drilling your finished hole will take out any school glue.
Nice vid transitions!
Christopher Westfall - Thanks!
Sooooo good thankyou!!!!
I have always loved the water. Sailing bit me along time ago after one trip out. After 2 decades I bought a 12.5 aqua cat. That was 1 year ago. This year we aquired 2 boats a older Aquarius 24 and a venture 21. The Aquarius is in better shape of the two. Both boats have swing keel came with Sails. Now just wait I g o. Papers. While cleaning vthem up.
How would you go about removing a saildrive in its entirety and making a structurally sound fiberglass patch at the bottom of the boat? Thanks
great vid, wich Transducers did you used..??
use the holesaw to cut a plug out of scrap wood. use the plug to block the hole you want to drill. the plug will centre the arbour on the holesaw (its called an arbour not a pilot bit)
I'm not military, and my Dad always told me to use the right tool for the job. lol A get it done attitude wins (most of the time).
Is there a video showing the actual install of the transducer?
Next time try this. Get a hole saw with the diameter of the hole and cut out piece with wood, fit in there and use that as your guide. Then proceed with the size you want to cut out.
I haven't seen the other comments. But if I were putting a bigger hole in anyway I would not bother taking out the first hole. Just plug it with a wooden cone shape slightly bigger diameter than the existing hole. Cut it off level then find the centre of the cone, if you didn't already mark it, then use that to pilot drill for your new hole size circular saw. .
Holes in the bottom of any boat, in use or not are really...REALLY, bad news if you don't use it cut it out and make a correct repair, you will thank yourself for sure one day in the future. Hint for a pilot hole, hot glue a piece of 6mm ply on the inside, cut through both ply and hull, pick off the ply and job done.
Watching you sweat pained me, you need some A/C. Being from the Coast Guard I know it’s hard to find a cool place below deck sometime. I’m new to your channel as of today and I have to say you put out some very useful videos. I live and hour from Ventura Harbor in California, I’m 55 next week and I want to learn to sail and buy a boat in the next couple of years. Here’s my question Josh: is it easier to learn from a sailing school or can you pick up the same stuff crewing and helping out other sailors? I have the navigation stuff down but it’s the trimming and all the lines you use, thoughts? It seems real expensive here in So Cal for lessons. Thanks
Try starting at Leo Robbins Sailing Center at Marina park in Ventura Harbor run by the City of Ventura: very economical and world class teaching. Once you finish all of those courses including ASA 101, I highly recommend joining Santa Barbara Sailing Center for more ASA certs.
You shoulda gone SWO! 😁 Great work Josh!
Are you at the Academy? My oldest graduated from there in 2014. He’s a helicopter pilot in Japan now. Really enjoy the videos. Just bought a Freya 39 in Langkawi and expect to be doing some work on it soon. So these videos are helpful.
Robert Dunlap - Thanks for the note. Yes, I work at USNA. But getting our of Navy soon. Very cool about your son. Congrats on your boat! Definitely a lot of work but the work is rewarding.
every animal has that mind set. its called ''being sentient.''.......... most animals form packs, they help you survive. every animal in the pack, wants to lead, only a few have the courage to fight to lead........ its called instinctive ego. . ''varying sizes, designed by ''LIFE HERSELF''..
Much better to have mounted it forward and fill those old through hulls then you have the ability of the transducer to find depth be fore you go aground a great feature
Excellent video, just try not to breath in too much of that glassfiber coming up when drilling
Any reason why you sanded the hole only to drill what you sanded?
I just wanted to sand off the old bedding compound so I could see what I was working with, but probably not a necessary step.
I know this is WAYYYY late... But future ref, if you need to enlarge a hole like that. Use a small thin piece of wood or whatever. Drill the pilot hole. Then place it down where you want, centering from that pilot hole. Superglue it. Then drill the bigger hole. The superglue is fragile and will break away with a tap of hammer thus removing the plywood or whatever substrate you used as sacrificial. I know... This would have been helpful then... But now you know.
A hole saw inside a hole saw works great.
I’m shocked at how mediocre those thru hulls are. And the existing transducer with a quarter twist to pull out is all that’s keeping your boat from sinking underway.
I'll never be a warfighter but I'm a reasonable engineer. Try making a wood disc with another holesaw then bevel the edge and hammer into the original hole... hey presto you now have material for your pilot drill to engage with. Way faster and safer.
mick mccrohon - thanks for the tip!
If anyone is watching this..next time prop up a small piece of wood over the hole from the bottom of the boat, like plywood....then you can use the hole saw.
I always get kick out of all the safety precautions and then trusting their lives to a twist and pull out plug. The guy below had the right method but you could have also done it with a variable speed battery drill.
His sweat poured off my screen and short circuited my keyboard.
When Sawing fiberglass, one may want o wear a mask. Otherwise good video
A router perhaps 🤔 good job 👍
you're re-doing the anti fouling anyway - so hot glue a piece of wood on the outside, measure and mark out your centre point from the inside ....then proceed to hole saw.
Great video, but I cringe when I think of all that fiberglass dust flying around and no respirator in sight!
I wish I was there to give you a hand, prob could knocked it out in less then hour, I just went through all my thru hulls replaced seacocks and through hulls had to do alot of work to make them work, the old ones where countersunk into the hull so i had to build up and cut new ones also the backing plate made me require extra long thru hulls which I had to cut to make work anywho i know i could have saved you some time on this one. Also why sand if you going to cut prob 1/8 inch to 1/4 all the way around you would have cut all the crap out. jw anywho happyboatworks :)
I solved this same problem by paying a professional to do it for me. Hence no youtube blog ;-)
Next time, Using your hole saw bit, drill a hole in a scrap piece of wood and then use that as a pilot over the hole your trying to enlarge.
Run the hole saw in reverse to score it!
Pretty sure GoPro has software to muffle the wind.
A cordless drill would of worked, but the drimell works too good luck take care
whats a boat?
the tool to use for widening existing holes like this is a step drill bit!
www.amazon.com/Step-Drill-Bits/b?ie=UTF8&node=256287011
or cut a hole in another piece and how it down on the surface for a guide of the bit you are using