How To Fiberglass Over Plywood
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- Опубликовано: 16 июн 2024
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In this show we cover some of the tips and tricks for fiberglassing over plywood as well as how to deal with tricky shapes and contours!
My grandfather built fiberglass boats in the seventies. Now I am getting into it 😊 Thanks for sharing your knowledge!
Margaret Bailey-Curtis what are you doing to get in it? I'm looking to get more info on how to build and RUclips is my starting point. I'm more interested in coordinating everything for a final product to be sold but where are the people like in this video
Ryan Monroe was
People that thumbs down this tutorial know nothing about boats, want nothing to do with boats, fully couldn't care less about fiberglass work (or doing it right) and have no inclination at all to imagine how many projects can be done with this knowledge. I am a certified USN and USCG ship engineer. I literally fought wars on wooden minesweepers with teak decks that couldn't use any metal except brass (excluding the coke machine). This was done right, used every proper principle, and was demonstrated by a true artisan, an uncommon find in this day and age. I grew up in a boatyard. Sharing these skills with the masses is both invaluable, and a contribution to humanity that shall last for the ages. Well, as long as we have tech! Thanks! Having rebuilt several sailboats from the keel up, I would have wished these were available 20 years ago. Now is good, too!
I’m a retired Coastie engineer 🙂
I made a camper out of plywood. I learned more from this one tutorial and recommend it frequently.
Good job ,same process on commercial work boats that I was taught in the early 80's
Former Coastie snipe. Loved working fibreglass with the dickies, what a smell though!
Man-in-the-clouds
Than you are the right person to ask....
I have seen many people use resin and fine sawdust to make the peanut butter, is there any difference in the end result to what he is doing using resin, silica, and fiberglass bits?
Brother, so here we are 32 months past when you posted this. I have a 13 Gheenoe that I want to put a raised front deck with hatch on. I was sort of sorry I got it instead of finding one like I really wanted, but it was a steal, so I stole it. Now, I am sure that as a lifelong woodworker, I have the skills to make a nice front deck with storage. It's channels like yours that make me think I can do anything. You're doing Gods work, brother.
When I was building my boat in'74 I used Styrene Monomer to thin the polyester resin to prime the plywood before laying up glass tabbing on bulkheads and also for sheathing the decks. Worked extremely well. Good useful tutorial, could almost smell the resin again!!
That's what I was told also.
I've been working in the shop for a while to make a wooden mold that will be sealed, sanded and have fairing compound placed on it so it can be used for a mold to create 2 pieces that will become a motorcycle saddle bag. Your clear description of materials used as well as the tips along the way have been very helpful. Thank you.
your the man!! thankyou for taking your time and speaking fluently and chronologically. very easy to understand and in no time anyone can be a master glasser by watching your tutorials! Namaste from Iowa
Andy, great videos. You are a wealth of knowledge. If I might add 2 things I have learned after building over 100 boats with wood cores, stringers, and transoms, I always treated my fir plywood with resin and 50% styrene. We did this in the evening before quitting time. We let this cure overnight. The styrene added teeth to the resin, and then added mat the next day. Also, wherever we had a sharp corners, like stringers, transoms, and chines or feature stripes, we added 7 or 8 uncut single strand roving to eliminate sharp bends. My 2 cents. Great job!
Shine is well known in Florida for his boat building knowledge, thanks Shine!
Currently working on my 4th boat refurb-restored project, will be watching more of these glass videos.
Kevin, the BWP
Great video Andy! I really love how clearly you explain this stuff and I always learn so much from your videos. Keep up the great work!!
+Zac Higgins you're awesome Zac! Thank you ;-)
+BoatworksToday Have you attempted to use fiberglass with a polyurethane as resin??
Zac Higgins Great video, i never thought to pre soak the ply
Great instructional video!
Zac Higgins Zac Higgins for president
,,,, Your channel RULES man,
Great video especially for those of us who have never used fiber glass. thanks
My friend and I will be redoing my stringer in a couple of days , I’m happy to see this video as I am inexperienced with glassing , but my buddy has been doing this kind of work for years . Your video really helps me understand what we will be doing . Cheers
It’s been around 20 years since I did a large project with glass. Needed a refresher to remind me of the process, thanks great video.
Great info for a job i'm about to undertake, saved me making a mistake trying to use one piece! Thanks heaps
This one tutorial, all by itself, was the most helpful, all-inclusive video that I recommend in my Squaredrop Camper Facebook group.
Hey 🤗🤗😁 That's why I'm here...diy camper waterproofing
A clear and most helpful demonstration of the correct way to avoid delaminating. Thank you. Hope you enjoyed your football !
I'm doing a jet ski to fiberglass Sears gamefisher boat transplant! Your fiberglass videos have been excellent!
I'm going to be building my first glass on ply boat soon and really appreciate you sharing your knowledge.
Dangar Marine wow to seeing you here buddy!! I follow your channel and watch all your videos.👍👍 take care down there in Australia. I would love a T-shirt to wear here in South Alabama for you.
Haha me too, landed up here after watching Stu's boat build.
Hey Stu.
Do it right, the New England way! Old salties live forever!
I rebuilt a 89’ evinrude xp150 last year. I have to say I learned EVERYTHING from Dangar Marines videos!!! Thank you so much for sharing your knowledge. The motor is running strong, unfortunately now I’m rebuilding the stringers and deck on my Stratos. Now I can thank both of you for the lessons for a total refurbished vessel🤙🏼
Well done. I deal with auto racing and some things can be done different. On your 90 degree fillets.. Take a small piece of cove molding and glass that into the 90 degree section. 3/8" works well for this. The molding is very dry and will take in a large amount of resin. Super soak, then glass over that area. . The cove molding acts like a small gusset and it will give you a true straight edge to work from. Enjoy
Very straightforward and thorough simultaneously. Very helpful thanks for uploading!
Thanks very much for the tutorial. Its my first time fibreglassing stringers and a transom and this video has really helped. Much appreciated.
Thank you so SO much. This tutorial is allowing me to build a custom shower in an RV that otherwise could not fit one.
Thanks so much for this, I need to cover over my old plywood Sabot hull and this is an invaluable video I'll keep coming back to
Thanks a lot ! Could have used this video in 2008! 🤪. But you are absolutely right. I built a 12’ kayak/canoe kinda hybrid. Very fast and stable. I wasn’t sure how to make the glass stay while I was putting the fiberglass resin on. Being a contractor, I laid out the glass and used a slap hammer/stapler to tack it in place, then I spread the resin on. After a few years it began to delaminate. Been messing with it, I’ll probably just finish getting it all off and just epoxy it. Awesome video. I am wanting to build a house boat soon, definitely will be revisiting this. 👍👍👍👍
I've been thinking of building a console for my little S10 pickup. Haven't decided on materials yet or the design but this gives me some ideas. Thanks for showing this I'll be watching again.
Great video's . . . Terrific info. Andy, one tip from a woodworker to another. Add a layer of hardboard (shiny side up, I used contact cement) to your assembly table, and put a coat of paste wax on it. Literally everything will slide around like it's on glass. Nothing sticks to it, glue, varnish etc. If your table saw is bench height, you could round the edges, or lower by 1/4". I got this great tip from a bookbinder company that used the same technique to slide book coverings around before they were folded over and bound. Works awesome.
+Ron Gibson that is a great idea and something I'm going to do once I build a dedicated out feed table, but for the time being this table is an out feed, assembly, and glassing table that sees a lot f abuse :-/.. I typically replace the top skin every coule months :-). Right now it's overdue!
I am 55 years old have owned and maintained 17 or 18. Boats through out my life power and sail wood and fiberglass i really enjoy your videos. As i never had any. Formal lessons. On fiberglassing i laugh because my very first boat i bough at 17 years old needed a new floor and the guy i bought it from gave me the plywood and glass cloth he had bought to do the job i had more resin on my sneakers and me than i got on the boat i made a career in Woodworking for over 20 years and i did get better at fiberglassing and using the West Epoxy system thankfully but all your videos and tips teach me something every time i watch my exwife and our daughter are school teachers and i became a certified instructor. In some sports that actually follow teaching curriculum lessons You. Have that personality. And toner of voice that make you have that professional style of teaching its obviious you have done. What you are teaching and i think thats why i like your channel unfortunately i suffered a Traumatic Brain Injury a few years ago that resulted in not being able to. Stay at my position of many years. And took a toll on me financially so money is way too tight other wise i would Paterson and send your channel as much as i could at the moment i have to. Pay for medical expenses and much needed medications to keep me alive
Blessings on you. I hope you’re doing well and hanging in there. That is a very difficult injury but I’ve seen at least one friend overcome the many challenges. May God be with you and provide all that you need my friend!
You are the Bob Ross of fiberglass.
I don't know anything about boats or boat lingo, but this video was super helpful for figuring out how to strengthen a lightweight diy plywood truck camper
this video is an object lesson in how to pass on skills and knowledge in very clear and understandable manner, I do not build boats or even use galls fibre and stumbled across this more by accident however you held my attention and interest throughout, well done sir an excellent presentation.
Great video. I am doing both stringers and a transom in my speed boat. TYVM!
Love this stuff great assistance for the hobbyists like me, I'm grateful for people that are willing to share expertise thank you.
Thanks again, very helpful as im doing some glass over ply, love your tutorials
Great video as always. You do the best how to vids on any subject that I have seen on YT. I sold my fiberglass boat and bought an aluminum one. I wish there was a channel as good as yours dealing with aluminum!
I love how when thinking for an amount of time, you always act like you're really thinking hard about how much time is needed, but then always answer with 30 minutes... half hour....
Awesome videos though. thanks for putting all this great content together. Really helping me with my boat projects.
Matt Bond? you sound as if you come from a long line of fibreglassers!
this is a top channel for anyone with an old grp boat. thanks so much.
great video brother . . just the info I need in order to start working on the floor in my boat. thanks. keep up the good work.
This guy is really informative. Thank you I've learned so much from you.
Finally...this is the kind of stuff my algorithm needs to keep sending me.
Awesome! Thank you for a most informative video. I learnt lots. I have not been painting the wood first but will now.
just bought a roller tool. you need to talk about your tools so we can buy them... thank you ... and Another Great VIDEO.. Thx... some of us are just learning to do glass work.. and it has help me a lot to do repair on many things like my lawn mower firber glass grass catcher, wow i repaired it and save $150 ON buying a new bag... so working on my boat doing glass work now thank you so much... going to glass my Harley faring next.
Try making peanut butter with calcium carbonate as the powder. Good stuff and better than the light weight fillers. Another problem that seems to be common is air bubbles in gel coat. I finally figured out what causes them. I noticed that bubbles were awful when my box fan was running. Actually, it was the paste wax that when heated by the catalized gel coat, released the styrene as a gas! Now, I'm a pva only fan.
Ordinary talc as a non-reactive (inert) thickening agent.
best video i've seen so far :) thumbs up!
With this video I’ve started to watch you channel, here I leave a comment to say thank you for all the videos you done it did help me learn a lot, which I’m going to use now that we started to build our catamaran!
When I built my boat back in the 1980's all the books of the time said that you had to leave a 1/2 inch gap between the hull and bulkhead to avoid making a hard edge on the hull that would cause stress points. Obviously over the years the materials and thinking has changed. Nice video, thanks.
Tru dat. Also the vinyl resin. Vinylester resin doesn't stick to wood very well. Yeah... it's cheaper and way easier to work with, but if you want a strong boat, you need to use epoxy resin with compatible glass. Hollywood makes wood cored boats they're going to blow up with vinylester resin because they don't have to last.
I've learned allot from this! Do you have any plans to demonstrate foam core laminating for like bulk heads, decking, stringers, ect? would love to see your expertise when it comes to laminating schedule w/ strength vs cosmetic and What type of core for each. keep posting vids! very informative and love your work!
If working with foam make sure it's polyurethane ! I actually like bàlsicore the best!
Every time I hear or see fiberglass, I start to itch. It is of course all in my head but it does not stop me from scratching....hehe
Just Subscribed Thank You for your knowledge I will use it to repair my Airboat ! HAPPY NEW YEAR BROTHER !
About to rebuild my floor next year, your videos are amazing thank you so much
Good video. I prefer sanding with 120 or 240 to give it some tooth. Soak with epoxy as you suggested. Fillet with chop fibers and wood flour or cabosil. Lay up 3 to 6 layers of 6 or 9 oz biax tape alternating by an inch. Cap it all with 1708 all wet-on-wet with epoxy. Super strong finished product. Watch the heat, remove the screws.
I had the impression watching this is that he was using polyester resin could anyone clarify this.
As a fibreglass TAFE teacher in Australia with over 50 years working with both fibreglass and plywood. I think you telling people that putting a coat of resin on first is absolutely crucial.
However, the first coat should be made with an additional 1/2 per cent accelerator and thinned with styrene 5%. This will ensure the resin properly cures but also the extra accelerator can be used to combat the naptha in the plywood which is a polyester retardant. The thinner resin will also soak into the wood fibres better.
Without the speedy curing, it is possible for the resin to not fully cure. especially in cheaper forms of plywood.
Its not always necessary but its a useful trick to ensure a good key when applying the first layers of glass and resin.
There are a LOT of glassed over wooden boats which have had their glass completely delaminate because that first glass/plywood bond has not fully cured.
VERY GOOD ADVICE!!
With most polyester resins available here being pre-accelerated, what would be the total amount of cobalt (or such?) Required in % ?
I really appreciate this detailed educational look at fiberglass. I'm trying to replace a transom and I wasn't sure how the glass was going to go around the 90° top.
Finally! Someone who does it right! Good Job.
First video of yours I've watched. Great video. Subbed and liked. 👍🏻
I was shown to prime plywood with 50% acetone/50%resin with a LOT of catalyst.Mix is absorbed into ply more quickly and further ,then goes off quick with extra catalyst
Love your channel man! Keep up the good work!
Thank you, very helpful. Just got a big old wood ketch that has a lot of fiberglass repairs on her
Great video on fibreglass over wood - very easy to follow and understand. If you were to attach a piece of marine plywood to a fibreglass hull, would you use the same technique? I assume you could attach/glue the ply to the hull with epoxy prior to laying the glass over it as you demonstrated. Thanks for sharing your advice a professional knowledge. Shaydon.
Hard to understand why anyone would thumbs down this excellent tutorial.
I like to think it was an accident ;-)
Mightiflier
BoatworksToday
jemayrph the
non English speaking people
Great Information!
I will be looking , primarily, for 'water-proofing' with the epoxy and fiberglass. I am building a "Classic Wooden Boat" but with a very modern Stepped hull 'under the waterline'... So I plan to put a 'cover' of fiberglass from chine down, as well as most of the inside of the boat. So I look forward to going thru many of your videos for more information... (Smile)
Helps me a lot to finish my Volkswagen Westfalia High Roof on a Toyota HZJ75... I had to make it sorter and to build a part made of plywood clovered with fiberglass. Thank you!!!
I've always applied sealer first. Let dry, then surface can take what ever you want without soaking or warping.
GreenWeeney He lets the resin go sticky, makes it much easier to stick on the matting so it does not move around, and you can tighten round edges
Do you an instructional video? I want to learn!
Mark Thomasson can we use this to repair an ATV plastic body?
A lot of info, very informative!
Seems quite labor-intensive. I'm building a wood center console for our pontoon and your vid helped me decide to get a pro to do the glass!
Thank you so much for your videos! They are so much help!!
A "trick" with bringing woven glass cloth over corners is to lay it on a diagonal to the corner. The effective radius of the glass strands is much larger so it lays easier on the corner.
Great tip Mike, thanks for commenting!
This technique is used in covering aircraft which use dacron cloth tape on curved or rounded surfaces, refered to as "biased tape" which is cut at a 45 degree angle to permit the fabric to be pulled into position as you glue it down onto the wing tip or the outline of the rudder or stabilizers.
Hey Andy!
Great show as always! I'm from germany and following you from the beginning!
One question:
I want to add strength to the bulkheads (varnished marine-plywood) in my 35ft sailboat by coating them with fiberglas, would you remove the old varnish, or is it possible to lay the glas on top the varnished wood?
Thanks a lot, Sven
+Sven Eckhoff Hey Sven! You'll need to remove the varnish where you'll be laying glass otherwise it won't bond :-)
Thnak you very much, very clearly explained and shown. My boat might finally be finished now !
Awesome demonstration! Helpful. Thanks.
About time Andy. I was having withdrawal symptoms. Lol
learning what I need to know thanks
You’ve done it perfect I’ve been in the industry over 25 yrs the only thing you could do different is to thin your resin with acetone it speeds up the absorption into the ply penetrates deeper . I’ve done test with this method and the results were astonishing. Ply that’s been in capsulated with this method with 2onz Matt 2 layers and exposed to the elements lasted up to 15 yrs before signs of delaminating and not much of it.
First class man! You have given me the confidence to do it!!
Try wetting 2 glass mats out on Mylar, then peel it up and lay it into final area. Then use a aerated pencil roller to roll out air bubbles.
Why bother? Prewet your area then lay your glass where it needs to go, apply more resin if needed and roll out. If you have excess resin you can soak it up with a brush or better yet a paint nap roller
i havn't seen too many of your videos (yet) but I am indeed aware of them and was under the initial impression that you are a big user of West System Epoxy resin, and thus, I was curious what you were using for resin in this video? im assuming, due to the use of chopped strand mat, It must be polyester resin of some sort,, which do you prefer (as in Brand of polyster) and when exactly do you prefer to choose polyester instead of epoxy and vice versa? thanks
@Terry Marsh You are making good points. It’s been decades ago when I studied and used resins and glass. Things have changed was well as materials. I would like to see a tutorial on the glass to resin ratio, glass strand orientation regarding tensile forces, and information about material (the skin) flexibility.
Very interesting i always wondered if you could fiberglass over wood now i know you can thank you😊
Great video - really appreciated the tip or pre-coating the wood. Thx
Laying it up on the bias helps with the curves too. 45degree angle.
Dear Andy, thank you so much for your tutorials! You've been a great amiable help :-)
I'm replacing the deck of my first (woodcore) boat. The deck is made of mahogany plywood, covered with epoxy and glass fabric. The deck is rotten (bad sealing) and I'm replacing the bad plywood.
Question:
Should the new mahogany plywood be able to 'breathe' or not?
E.g., allow air to escape (and if water creeps in, allow it to evaporate), or is it better to completely seal everything with epoxy?
Thank you!
Willem
My dad built and raced boats in the 1950's and 1960's. My dad was a master at applying fiberglass over plywood. He built custom boats for races like the "Salton Sea 500" and the annual race between Long Beach and Santa Catalina. He built boats for people like Roy Rogers.
Great video! Really appreciate how general and concise your advice is.. A rare thing these days much love
2 questions. where do u get fiber glass cloth from ? Do I have to sand after each layer ?
Anywhere you want to. It's not as common as dirt, but close. No you do not sand after each layer, but you do roll it down compact with the prior layer and make sure there's just enough epoxy to saturate it, no air between, but not standing puddles of epoxy either unless you're coming back right away with the next layer and that'll take up the excess.
@@stinkycheese804 if your resin has a wax surfacing agent then you do want to sand between each layer, it's also a good idea because any little piece of sticking up won't allow the next layer to lay down smoothly
Sanding between layers depends on the application - IMO. If it's a hull application on the bottom of a ply skiff, I don't sand. Some epoxies don't emit an amine blush, an oily film as it cures. If yours has that, you need to wash it with acetone and possibly light sand before the next layer. If no blush, I just light sand to make sure nothing has risen that will hold the next layer above the last one. It also makes the final sanding easier because you've already knocked down the bigger stuff.
If the application is just interior structure with no concern about looks, I just wash with the acetone and quickly sand down just the lumpy stuff. If your brand of epoxy does not blush, just sand as you see fit.
@@stinkycheese804 Do you know the reason cloth is used and woven roving?
@@toddlehman928 You should not use waxed resins for layups. I only use them for a final brush coat if it is not going to be gel coated and left as a raw glass surface.
Great video , I have a question with regard to fibre glassing in general, If the project is quite large and may not be completed in one day , What preparations/precautions should one take so as to not inadvertently create a weak area where both days work join ?
I have the same question. And also is it bad to stop for the day and come in the next day and continue or do you need to do it while everything still tacky or wet? That was never explained and I see he’s never answered your question but that is a big reality as most boats are pretty big comparison to the little piece he did. So that needs to be addressed. Thanks and appreciate the video it’s good just needs to be a little bit more thorough for us beginners 😁
What the heck how does anyone give a thumbs down on a for free learning video? This video is fantastic I have a plywood windsurfing trailer that I want to fiberglass the roof of & this video gave me great ideas. The tool you use to get the air bubbles out with is great to know about.
Great details. Superb videos! Thank you so much!
Have you ever thought about using spun bonded polyester landscaping fabric to make a composite?
uncletomsrice I used landscape fabric when I water proofed my new shower, I used redguard, worked good and fully wetted out. I think it was non-woven fabric and soft to the touch, not scratchy. It layed up nice and tight into the corners with no spring-back
is that a themos coffee mug i see? great choice!
Thank you for all the wonderful information you put out.
no.... thank YOU for your time. you are awesome dude. really appreciate your videos.
I do this stuff for a living and I like watching these videos about different repairs etc because, hey.... there's always a better way or something to learn. From experience I can say you know your stuff. My concern is you didn't explain catalyzing the "butter". lol check out the vanquish 21 bristol harbor series on RUclips :) happy glassing.
Will do! Yea, some stuff unfortunately gets edited out of the video for length; that happened to be one of the details. I think I did include it in the Patreon version though ;-)
Do not touch any surface you're about to glass/laminate/fiberglass with your barehands. The body oils create fisheyes. Use acetone to clean such prior to laminating.
Unreal video cheers for the tips . I have got a new bulkhead to go in my fishing boat
Excellent video. Thank you for this. Very educational
is it best to use expoxy resin on stingers?
you can put epoxy on fibreglass but you cant fibreglass on epoxy, the cross link polymers don't bond as well.
Pretty much required. Polyester resin doesn't reliably bond to wood. Some people have stapled the first layer or two of cloth to the wood after laying up, then laying more cloth on that. Seems to work on Shrimp boats in the Gulf.
Go epoxy, polyester is best suited for products. Plus the slow cure of epoxy allows you to go 'wet on wet',and you can use specialized cloths
I was taught by a old timer when coating plywood first to use 50/50 resin/acetone. We have always done this and it sucks right into the wood. We're we misinformed? Any time we put a hole for a bilge or plug.
+Team Frankenmerc It mostly depends how thin the resin is to begin with. The resin I get is pretty thin already so I don't usually have a need to thin it, but if / when I do I prefer to use styrene. Acetone would work as well when used in small amounts, but styrene is a solvent that's already mixed into the resin from the manufacturer so that's what I stick with :-)
BoatworksToday q
I am a grp roof installer,we have used talc with polystyrene resin to make a peanut butter/filling paste to fill in cracks and dips on an old surface. Just a thought.
This video is just wholesome and informative.
Having used fibreglass for years the most important step this guy has not told you is to round off the sharp, square external edges of the plywood otherwise the glass matting will bubble off in these areas. He started with square edges then when we cut back he’d rounded them off.
First thing I noticed was sharp edges then they where rounded in next shot, from Te Poi Fibreglass Ltd. NZ
Noticed the EXACT same thing. You could even see the router on the table, however he did touch on the radius at the end.
I have done absolute minimal fibreglass work, but the first thing I realised was, it doesn't go round sharp corners.
I addressed all of this in the video... Gotta watch the entire thing ;-)
@@boatworkstoday DO NOT USE TALCUM POWDER. (and that's the correct spelling). If the resin isn't toxic enough (some have extreme allergic reactions to epoxy, and the solvent in polyester resins will make you sick too) I'll advise that in the mineral world, talcum is closely associated with asbestiform materials. Commercial "Talcum Powder" frequently contains enough asbestos to make you sick. It might take 15 years, but you can get mesothelioma from a single exposure (from a formerly EPA-registered Asbestos Project Designer).
ALSO... anyone working with polyester resin should be wearing a respirator with appropriate (activated charcoal) filters. I'll be charitable and guess this demonstration was done with epoxy resin.
Great tutorial. I've worked with Poly and Epoxy Resin for 25 years. I'd like to see you use a Respirator in the videos. Save your brain cells a bit. :) I met someone who has worked with the materials as long as I have and they were dopey from not using protection.
Do a voice over instead of speaking through a respirator if that makes it hard to do videos.
having cross ventilation is better than a face mask, you cant tell how saturated the air is with a mask on until its to late, large volumes of glassing you should still have a mask especially using a chopper gun..
@@frontlinecustom - A quality respirator rated for volatile chemicals is better than cross ventilation.
He likes to get high while working. Me too!
awesome video! Thanks for sharing your knowledge!
Thank you for what you do Andy...love you video's!