Understanding your laser Kerf and how to set it up for perfect cuts!
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- Опубликовано: 8 июн 2022
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The message about the "community" is DEAD ON ACCURATE!! The
cnc/laser community is a great bunch of people!!
Yes they are! More like a family! 👍
Thanks Rich for the file! Great information, appreciate it.
You bet Allen, thanks for watching!
Fantastic video. Very detailed and honest. Thank you!
Glad you enjoyed it Kari!
You have made this process amazing! You are a wonderful human being! I will be purchasing downloads from you because you have shown me that it's our job to take care of each other. I am super excited to learn more from you. Thank you!!
Wow, thank you so much Heather!
Great video, thanks for sharing
My pleasure Randy!
Thank you ! You have been so much help to me.
I'm so glad Sandy!
Thank you !!! Your videos are very helpful
Glad you like them Erick!
I love what you do, thank you!
Glad you enjoy it Frank!
Thanks Rich very helpful.
Happy to help Dave!
Thanks for this tutorial, it's a thumbs-up from over the pond👍
Glad it helped David!
Excellent information!!!
Glad it was helpful Robert!
Great video Rich!, and with the bonus lens cleaning tip also!
Thanks Chuck! Glad you enjoyed it!
Thank you Rich!
My pleasure Robin!
Nice video. Thanks for the time and effort to produce this and the other videos you do. 👍👍
Most welcome Douglass!
Another great video and always waiting for the next one to come along you are a star and a very honest... need a few more guys like you around the world.... thanks rich
Thank you Sir, much appreciated!
Thanks! Love the channel
Glad you enjoy it Robert! Thanks so much for the support!
Sorry for the loss of your friend. Thanks for sharing your knowledge.
I appreciate that, *thanks!*
Thank you for another great video, I am learning a lot from you I also purchased the 8 layer cross, just waiing for the wood to come in.
Sounds great Dan! Practice makes perfect! You can practice with cardboard.
Another informative video. You are my source for anything to do with lasers. Like your teaching style and I get most of what you’re saying. Just now starting out with a diode laser.
Awesome John! Thanks for watching!
Thank you so much again
Always welcome Lyndon! Thanks for watching!
outstanding! Thank you !
You're very welcome!
thank you so much for all you do, for the community. this is a game changer for me I have been struggling so much with this topic in particular. greatly appreciate you and so happy I found your channel and links.
Happy to help James!
Thank you so much for the information. I have watched hours upon hours of videos and read more. You fixed my kerf issue in one video. Thank you Sir.
Glad it helped Richard!
Thanks. Very helpfull!
Glad it was helpful!
Nicely done Rich! Glad you snuck that bit in on how to clean your diode laser lens, I've been wondering how to do that properly. Looking forward to the full cleaning video when you get a chance!
Awesome Ben! I'll get to it soon I hope! 🤪
Yet another brilliant video from the master laser guru . love all the mistakes as it proves youre human after all.
absolutely love this channel and Rich has helped me out soooooo many time. thanks Rich
Dan ( across the pond )
Thanks again Dan!
Another great video Rick as always. I ready need to clear my lens and mirrors haha thank you. 👍
Every day George! 👍
Well you blew me right out of the park on this one. I think out all the videos I watched of yours, this rated above all. What a great information to have. Going to search on taking these lasers apart to clean. Thank you, Thank you. So good to see that some 'Old School Boys" are still around.
Glad you enjoyed it Joe!
Great video as always, Rich. Not only have I learnt how to handle kerf, I even know what it is!!!!!
Right on Alf! 👍
This is quickly becoming my favorite laser channel! Thanks for putting out all of this great information!
Wow, thanks Michael! Much appreciated!
@@TheLouisianaHobbyGuy thank YOU! I run a small woodworking business and I got a big contract with a company, but they needed laser engraving on most of the parts I make, so I’ve had to learn all about it in short time. I watch A LOT of videos and yours are truly top notch. You have a great, calm demeanor and it makes the content you put out really stand out from the pack. I’m going to try and remember to check out your 1 year anniversary video tonight!
More basic skills that give us an advantage over those that don't or won't watch your videos. Thank you Rich. 👍
Right on Kiwi!
thank you, i've learned so much from your vids
Glad you like them!
Brilliant Rich. thank you. Well said.
Thanks Rob! Appreciate it!
@@TheLouisianaHobbyGuy Not sure if I'm being dense, diode question- would a vertical cut be a different kerf to a horizontal one? thanks Rich
Yes it could be, depending on your laser. The kerf offset will still work Rob.
Thanks Rich, informative as always. Looking forward to the video on cleaning, I clean often but would like to see if there's a better/easier/more efficient way. Thanks again for putting out these videos, us newbies really appreciate it,
Thanks for watching Peggy!
Hi Rich, great video and file! Thank you so much for sharing. I too struggled with my stubby fingers and the pieces tumbling about. I found that placing a scrap piece of plywood across them while sliding them to the left helped tremendously. Far and away the easiest tutorial on adjusting kerf offset that I found. My cuts are so much better now it's night and day!
Glad to hear it David!
Thanks for tips
Any time Adrian!
I'm really glad I watched this vid. I came for info on kerf, but got a wealth of info along with it. Cause and effect are principles vital in all of life's learning; you are gifted in presentation. Now, if we can both mitigate shaky finger syndrome without swearing off coffee!
Thanks for the comment Peter!!
Thank you and do keep this type of content coming. You are so clear and make it so straightforwards. I saw your lightburn 101 yesterday. Total common sense. I liked and subscribes. Today, yet another perfect tutorial. My laser is in the post, I can't wait to get going. I don't know what to make first.
I have lots of free projects on my forum Paul!
@@TheLouisianaHobbyGuy I have a long list of things to make. I am looking to start with small experimental engraving and cutting, to learn how to. Then I have a few projects in mind. Ultimately, I would like to transfer some rc plane plans to lightburn which I believe can be tricky due to line thicknesses. I will certainly be on your forum. Currently, I am getting impatient because I left my laser in the basket for a couple of days and it went out of stock so I am now waiting for the restock to arrive. Luckily, I can view your vids and learn. I find your calm delivery very reassuring. Thank you for your content.
YES a lens cleaning tutorial would be greatly appreciated Thank you for all you do!!
Coming soon Ken!
Lens, mirrors and linear guide I say :) that would be interesting :)
@@GS-dx5uq Yes! I'm going to do a full service video on maintenance as soon as I have time.
You are most excellent LHG!!!!!!
Wow! Thank you so much! I appreciate the comment!
I am a first time XTOOL laser owner and I have learned a tremendous amount from looking at your videos. Especially as a first time laser user not knowing how important it is to keep your lens clean. Obviously X tool knows this is well because they started sending an extra one with their lasers. It made me feel really intimidated to use it because I thought at first I was the only one who made this very interesting mistake.
Thank you so very much for creating this video! I have new Longer Ray 5 10 watt with air assist that will arrive tomorrow I am told, next is finding 3mm plywood. 😁🛫
Glad it helped!
Ran the file worked great, i added numbers to each cut piece to re arrange when they launched out
Great idea Mike!
Good video!
Thanks Fred!
Thanks for sharing your knowledge. I’m relatively new to the laser world and my primary hobby is woodturning. The woodturning community is very open and sharing of information, ideas and procedures. Life is great.
Welcome aboard!
Good Info Thanks😃
Glad it was helpful James!
i'm new on your channel , and i learn alot from you. like most people say in here ,you are a wonderfull man. thank you for lots of video's !!!
You are very welcome!
Thanks!
You bet Bob! Thanks for the support!
Awesome like always thank you. If you etch a number in the pieces that way if they get it of place you know exactly where they go.
I see people that do that, but I don't understand the logic behind it Roscoe. They're all going to have the same kerf.
Just wanted to give you a big THANKS 😊. I’m a new laser person, in fact I don’t even have it yet as it’s in the mail.
This is the type of informational video that is all needed information. Especially cleaning of the lenses. Thank you again.
Glad I could help!
LEGEND!
Thanks so much!
Really good stuff Rich. I'd like to see a c02 lens and mirror cleaning tutorial. I've use Zeiss lens cleaners for my diodes but haven't used my c02 enough yet (like not at all 😁). I figured out how to calculate kerf width on my own when I started making boxes, but your way is much simpler. Thanks for the video!
Glad you liked it George! I'll be doing the lens cleaning video when I get time.
Hi Rick, I've recently bouth my 2nd laser, a Sculpfun 33W. My first one was a 5.5W from Sculpfun. With that one, I didn't really had any kerf issues, but the 33W was challenging me more. Your tutorial fixed it in under 5 minutes! Thanks!
Very cool!
Thank you so much! I was able to download this tool and calculated my lasers kerf of 0.12mm, and now all my marquetry pieces fit together snugly. One other thing I did for the omtech 55W laser was adding thin shims to the underside of the knife blade bed that the honeycomb bed sits on and it's perfectly level now. I had about a 1.5mm slope from the left to the right of the bed.
Great! To level the bed, open the bottom compartment and loosen the tensioner screws so you can take the belt or chain off the uprights on all four corners. Now each of the upright screws on all 4 corners can be turned by hand until the bed is perfectly level. Replace the belt or chain, put pressure on the tensioner and fasten it back down.
Great video. I had heard the term KERF, but had to look it up. lol Love your videos. I'm hooked and have so many things to do now. lol
Awesome! Thank you!
Thanks for this file, to avoid getting them mixed up I engraved 1 through to 19 on each piece
Whatever works for you Charles!
I don't think it matters if you mix them up, you are just measuring the space that is left.
WOW! I just tried this on my SculpFun S6/Pro 5.5 w and the result came out with Kerf of 0.056. Now I will be able made some pencil boxes for my granddaughter's for school this year. That is if the SculpFun S30 22w ultra gets here first, then I will run the kerf test on it.
Thank you very much!
Glad it helped! And yes, the 5W lasers have the smallest kerf!
Have you tried laying a streight edge on the top of the pieces b4 sliding to the left? You are such an amazing guy! Such an immense knowledge base. Love listening to your detailed and gentile speaking tone, your passion about this subject shines!
Thanks Barry! I personally do a ramp test and use a microscope and a crack ruler to get the kerf. I just did this video for people who don't have those tools. Some folks number them as well.
Hi Rich, nice idea for determining one's kerf. I have big fingers too and I would suggest laying a ruler or a smooth piece of flat stock across the length of the pieces to keep them from flipping so you can easily slide them to the left. I haven't tried this yet but it ought to work.......Jack
Great tip! Thanks Jack.
I wish I lived near you so I can give you a huge hug! You are simply amazing, smart, awesome instructor, and giving person. I have learned so much from you (you kept me off the ledge many times. I was ready to jump and give up). I love all your videos. I especially wanted to thank you when you said lenses cost $30-40 do you know a big well known laser company was charging me $100 for a replacement lens from cloudray! My air assist was not working properly and I kept burning out lenses. Which they couldnt help me get right my husband figured it out! They sold me 2 replacements for $200!!!
I wish I never bought this laser from these liars. Thank you for making me smart and have more confidence that there are nice real honest people out there! 🖤🖤🖤🖤
Wow! Awesome Debra; thanks so much for the comments!
Might wanna add a number engraving to each piece then you could take it out to the table. Thank you for this video your amazing
It doesn't matter, they're all the same size.
Great video once again! A video on types of lens would be awesome if you're ever bored lol
Thanks for the idea David!
Thanks for this and the subsequent Kerf explanation videos, greatly appreciated. I have downloaded the Kerf file but checked it before and spotted that the version I downloaded had a 2mm Kerf value set against the cut layer , I think this should be zero for this reference piece, else it could skew readings significantly. All the best and thanks again.
Thanks for the heads up!
watching you deal with the little pieces moving around to get your measurement, if you use a flat metal scale (ruler) you may find it easier to push the pieces together and hold them tight with the scale as a weight or holder.
Yeah, thanks for the tip. Anything on top works better than nothing! 🤪
New subscriber! I do not have a laser yet! Doing lots of homework and teaching my self first! I have a lot of ideas and don't know how to get it to a laser yet!
Welcome aboard! Or I should say, welcome to the obsession! 🤪
*THANKS TO kkhairat73 WHO SPOTTED MY BLUNDER!* The math is simply the NUMBER DIVIDED BY 20! (10 pieces x2) My brain wasn't working right! 🤪 The file downloads have been FIXED! I have the BEST VIEWERS! *In case you missed it, I had Lightburn set to INCHES instead of MM when I entered the kerf on my cut layer!* I forgot to switch back to mm! In inches, my kerf offset is 0.00358. *Additionally, I probably shouldn't have used the puzzle example!* This is only applicable on puzzles with double lines and double cuts! Kerf offset is mainly used for inlays. I'm going to do a better, less confusing video using inlays as an example instead soon.
LOL just answered to that and saw your post! Grea honesty.
😃Thanks! Your alway saving my bacon Buddy!!
Glad to help! Thanks so much for the support @flanikent 🎅🏽
Brother if your one thing consistently its heplful Thank You!@@TheLouisianaHobbyGuy
Thank yo
You're welcome!
Thanks for the video. I'm learning lots between you abd Roger's Shop! When doing the kerf test, might I suggest to number the little pieces just in case you f#@$ up. Also, lay a ruler across the little pieces so they can't jump up.
They don't need numbers Denis, since they're all the same.
Thanks, if you hold a ruler over the center it will probably be easier to slide the parts, cheers from Norway :)
Thanks for the idea!
Thank you for this, going to give this a try. The math part, since it's communitive, 3.65/40 rather than 20 and again 2... just for those that want one step ;)
Understanding for those that don't like math much but it does work... ;)
Fantastic! Thanks for the tip!
Great video Rich! Would you then need to do another test to adjust the cutting parameters again due to higher efficiency?
Yes David. Glad you pointed it out.
As always a very informative video and a process that I need to incorporate into my diode use. Question, how do I go about educating myself about diode lasers and what can be done with them. You mentioned changing lenses so I am wondering if there is print documents that I should read or what? Thanks
Lenses just unscrew Larry. You can buy a pack of different size lenses on eBay and try them out. They're pretty cheap.
Rich, thanks for all you do to help us beginners. There is so much to learn. Do you get your woods locally, or is there an online source you use?
Both Rob! Locally, Amazon & Ocooch Hardwoods online.
Great video, maybe lay a piece of acrylic or board over the cut pieces to keep them from jumping up, and then measure the gap ???
Great idea Stephen, thanks!
I wonder if the sequence in which the parts where cuts matter if so why not number them remove them from the laser bed and layout on a solid surface to then measure! just a thought
I think the most important thing you said that hit home for me was explaining what direction to go with the offset numbers larger = tighter
I agree with you about cleaning lens, I bought the solution you suggested. It reminds me of the battle of oil change places say they every 3000 miles. They sell oil. the automobile manufacture says 7500 miles they sell cars. I changed the oil at 5000 miles 😁🛫
In this case we half the manufacturer recommendations.
thanks again.
Perhaps you can use masking tape to help hold the pieces down flat as you scoot them over. Scoot a few, tape those down, and so on until all 20 are scooted over and taped..... then measure?
I am not at my machine to try it myself, but it should work (at least in my head!)
One of my viewers said cover it with cardboard... works!
@@TheLouisianaHobbyGuy Thats even better.. and easier!
Thanks! Great video!!
You're welcome! Thanks so much for the support Richard!
Rich, I want to thank you for your channel. I am just beginning my laser journey and learn so much from watching you. I now have a better understanding of laser kerf, what it is, etc. But I am not sure how to use it. For example, if I cut out a puzzle piece, the piece will not fit tight in the hole it was cut out of even after adjusting the kerf offset, correct ? Do I cut the hole first, then adjust the Kerf offset outward and then cut the piece? I guess I don’t understand HOW and WHEN to use the kerf offset.
It takes some testing, like in the video. You adjust the kerf for a tighter or looser fit, either way.
Good information! Have you tried placing a clear piece of plexiglass over the cut out pieces to hold them down while you slide them together? have a great day!
I ended up using a really thin piece of plate glass.
Awesome video Rich! I really enjoy your videos and how simple you explain everything. Thanks so much. I am new to lasering, in fact I don't even have a laser machine yet because I wanted to make sure I purchase the right machine for what I want to do which is puzzles. My main concern was the Kerf size because as you mentioned some of the puzzle cutting videos that I watch on RUclips show puzzles with very loose pieces, and I want them to be tighter. Now I know it is a setting for the cut and not necessarily a specific laser brand. I got your explanation about how to calculate the right Kerf size using the rectangle file but, how do you apply that to a puzzle rather that a rectangle? Thanks again for the video Rich.
Glad you liked it Axel! Thanks!
Axel, I notice you didn't get a reply to your question. The kerf offset makes the puzzle or any piece you cut larger or smaller by the offset to give you a tighter or looser fit. Rich said how his offset on this particular laser, he would reduce by about .02 for a puzzle for kids. Hope this helps, though you have probably figured it out yourself already.
I am so thankful for your videos. I have been looking for someone who made figuring out kerf simple. Even following the directions on the file that had been updated. I got this and it is wayyyy off on cutting. My gap on the test board after sliding everything to the right on a 0 kerf setting was 3.3mm. I divided it by 20 and got 0.165. The video says to dived by two the file does not. so I did not. I sat my kerf at 0.165 but it put the inside frame line in the middle of all the horizontal cuts and the outside cut line enlarged with very rounded corners. Now I am unsure what to do.
Try posting on my free forums. lahobbyguy.com/bb
Hey,
Are you still going to do a full service video on maintenance?
It's on the list Mark!
Thank you for the clear explanation for determining the kerf offset for the laser beam width. One confusing point at about 15:30 in the video you measure the offset from 20 cuts in mm then do the calculation and enter the kerf offset in Lightburn, but it shows the units are in inches? How did the 0.091 mm offset calculation convert to inches?
That was a mistake on my part Charles, sorry!
OK I was surprised when you said no alcohol since everyone who has a mirror or lens cleaning tutorial uses alcohol. As you showed the bottle of cleaner, I glanced down and sure enough, its the same as what you have! LOL I have one of 3 mirrors that lost its gold color, they are the copper mirrors, and I have no idea why, its the Gantry mirror, while the tube and lens mirrors are still pristine gold. Head Scratcher.
Likely a quality control issue. You can use alcohol IF it's 99% IPA, most people don't have that because it's expensive.
First, let me say that this is a great video. You always get to the point without a lot of BS.
Knowing that my OLM3 beam is a rectangle, I ran the test horizontally as in the video, then rotated it vertically. I did get two different results. Should I average those, or does it matter?
Hmm... I don't know! Sounds like a good idea Claude!
@@TheLouisianaHobbyGuy I figured most lasers have a rectangular beam. I'm surprised this hasn't come up before. Will you test it again using both horizontal and vertical?
No, But I'll mention it in the future.
Learn something every time I watch a video from your sir, thank you! Two questions. Fist can you take a piece of tape and tape all the cut pieces to the "frame" and move to a flat smooth surface so it's easier to get the pieces to the one side. May help fellow butter finger such as myself not have to fight sliding them to one side. Second, and this is gonna sound so dumb...... how do you wash the microfiber cloths? Just throw them in the washing machine? Curious if the detergent residue left would do the same thing you were mentioning about abrasive cleaners? Thanks again!
I wound up using a small piece of pane glass to cover the pieces. And my wife uses dawn liquid to wash my microfiber cloths. The white lens cloths I don't reuse. I think the packs of 24 on Amazon are about $6 and last a very long time.
The kerf and cleaning lenses are important information and I’m glad I learned from you. Thanks. I’m based in Australia and not sure what you mean by non abrasive spray for cleaning lenses… would sprayed distilled water be good?
99% IPA and a microfiber cloth will work well.
@@TheLouisianaHobbyGuy thank you... 99% IPA, do you mean isopropyl alcohol? but you said not to use alcohol in your video?
Could you use a piece of masking/transfer paper to lift the cut work out if the bed and measure in the bench?
Yeah, there are lots of ways to get around it.
Thanks Rich, Great tutorial as usual. had not set mine and Lightburn had a figure of 2.311mm for my offset, running the test now, but if i am cutting out a puzzle, will this kerf offset only make a difference if i cut the pieces with a gap in between each piece, Confused how it would make a difference if the pieces were cut up with overlapping lines. Hope this makes sense. Thanks again for a great helpful channel. Will send you a few dollaroos, but cannot afford a monthly send at the moment.
For puzzles, this is for for the single line versions.
Thanks Rich. Do you recommend running a separate test for each different material/thickness?
Yes, absolutely Steve.
@@TheLouisianaHobbyGuy Okay. FYI, I ran the cut test on 6mm birch plywood and 3mm aspen (not plywood) and got the identical result. xTool D1 Pro 20W.
Super helpful video, thanks Rich. Would I be correct in thinking that this test is only applicable to the exact height of your lens focus from your material and also lens size? i.e. a 2" lens @ 6mms height from material?
If the laser height was lower or higher then the kerf would be different, correct?
Thanks
Yes, you should do this at the perfect focal height.
Helpful concept. So, kerf offset must be lens- and focus-dependent. Question: Do I now I have to update all my cuts with my kerf offset each time, or does the software keep track of it and apply it to all my cuts going forward?
Nope, just once.
Great video, lots of tips. Never knew alcohol was abrasive... just ordered some Purity from you link.
I think I did spot an error in your kerf calculations. When you took your calipers and did the actual measurement of 3.64, it was mm, but your setup in lightburn said inches. I am assuming that the calipers should have been in inches? Thanks again.
Yes Mark, my old brain makes lots of errors! 🤪 99% IPA is fine, but it's expensive! Most folks have 91-94% IPA in their cabinets, and *that is abrasive!*
Interesting video Rich.
What's the advantages of those 20 cuts, over for example cutting 1inch square, measuring the actual square, to get the difference between the 1inch on the sotware and then actual piece.
Then divide by 2 to get the kerf?
Thanks
I don't actually use this, but if I did that's how I would do it. I usually just add my spot size to the project size and that works like a charm.
So to find your spot size, do you use the 1inch method or you do it differently
Personally, I just add the spot size of the laser to my project, but most folks don't have a microscope and crack ruler to measure the X & Y line width, which is why I made the video.
Great video tutorial on kerf, and thank you for sharing your knowledge...
but I'm curious about the purity lens cleaner recommendation... I looked up the ingredients, and it is made with 2-propanol, which is basically iso acolohol... but within your inserted video text, you recommend no abbrassive and no acolohol cleaner should be used on lens...so I'm a little confused...were you referring to a certain type of alcohol that shouldn't be used?
99% IPA is okay, but it's not what most people have Zanna. Most folks have 91-94 IPA.
have you tried putting a small piece of wood/acrylic or something on top of the squares while trying to slide them over, then remove, or not, said piece of whatever. should keep them in place and make the process a little easier.
Yeah... after about 20 people told me to 🤪
After finally using the kerf assist I find that there is insufficient space to move the cuts to the left, I am using the sculpfun 9. Am I doing something wrong? I set the width to 130mm and the kerf to 0, but they won’t move to the left. Thanks for all the very informative video’s that you keep putting out.
I don't know, I can't see you settings in a comment. You can head over to the forum and get answers there: lahobbyguy.com/bb
i think you great by doing this! iam a disable vet, i just got a longer ray5 10watt laser. i need help by learning how to use my laser on lightburn, is there any way you can help me? is there anyway we can talk in private not on Facebook? i dont want the hole world know my business Mr Russell
Try this video John: ruclips.net/video/T8DZLl1O0xo/видео.html
Hi! I want to ask if we can use the liquid cleaner for contact lens?
If you mean for lens cleaning, I don't know. I prefer Purity or 99% IPA.
Hey Rich, great video.
I noticed that when you did your measurements and calculations, they were in mm but when you entered it in your settings, that was in inches. Does that make a difference?
You are correct, that was a mistake! I should have switched Lightburn to mm before doing the calculation! My actual kerf offset in inches is 0.00358. Unfortunately, I can't edit the video Dean.
@@TheLouisianaHobbyGuygreat, thank you for clearing that up