I hope this is in the correct place. One tip I’m needing is what is the KERF of the laser beam? What it eh actual/practicable KERF of the laster cut. I’m running int some difficulty by not adequately allowing for the KERF and glue-up allowance. Thanks, Michale

Depends on the material. There are many threads here on how to test and measure it. Edit… took me a second to find it - this is the one I find most useful. [image] HOWTO: Kerf Measurement and Jig Free Laser Designs Understanding the interaction between your tools and mate…

It changes slightly for each material, and is based on the thickness of the material, and the speeds you are using to cut with. I’ll generally start with an offset adjustment of 0.15 mm to 0.18 mm (which is half the kerf at the speeds I use), or 0.006 - 0.007 inches, run a small test cut or two, an…

@eflyguy and @Jules have given you a great place to start but the bad news is that kerf is as much art as science. After starting with a good guestement, it is best to try your settings on small test pieces until you have it the way you want it. I always use joints that are like what the actual par…

I’ll add - if it’s a critical project, it’s always a good idea to test with a piece of the material you’re using, and not rely on prior measurements. Here’s one example of test pieces I made to work out the best glue-less press-fit I needed for a particular project. [image]

This is great. I think you may have a great answer to what I’m struggling with. Would you be willing to share this file with me?

[image] michael16: Would you be willing to share this file with me? There are two problems with this. First, and minor is that we don’t ask for files here (newbie mistake) second is that asking this question shows that you are not fully comprehending the use of sample joints. They have to be …

Just a heads up my friend. I can’t read the picture to see what is printed on it. The only thing I’m looking for is enough clarity in the picture to see what the details were. I should have been clearer as to what I was trying to see. It would have been helpful since you can see I’m struggling …

Thank you eflyguy for taking the time to teach. Responding in the way you did helped me have a better understanding.

I was afraid that that might be construed as unkind but it really was not meant to be.

Glowforge Owners Forum

ACTUAL KERF of the GF LASER

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Aloha February 3, 2020, 12:54am 8

Easy Kerf Gauges Free Laser Designs

Boring, but really useful. Cut them out of the material you want to check. Slot you material into the slots to find the right size and you already have your kerf allowance! The dimensions are correct in the drawing program, but the actual cut sizes will vary according to the kerf of the cut. So if you are looking for a tight fit, just try the slots until you find one that is tight. That is the dimensions you need to use in your drawing program.! [Kerf_Gauge_Thickness] [Kerf_Gauge_Circles]

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