I posted here a while back when my glass bed failed. One of the suggestions was to replace with Garolite or G10. My sheet finally arrived and i set about cutting it down to size.
…
Within 4cm, my basically unused jigsaw blade was worn flat, and by the end of the first cut (20cm), there is basically no more teeth.
For the second side, I tried using a multitool cutter, and within a few millimeters it was visibly blunt (plastic and metal tools). Finished it off with a standard wood hand saw, which seemed to go better.
So warning to anyone considering garolite, dont use power tools, it will fuck them up.
Yeah, usually you use a cutter to score where you want the cut and just break it. That always worked for me, though I have never tried anything thicker than 2.5mm. Also, cut in both sides for optimal performance
I have a 3.5mm piece. Scoring and snapping might have been smart.
Fwiw, it cut very cleanly. Very straight edges.
I milled G10 the other day. Maybe use a router if don’t have access to a mill and don’t wanna have a local shop do it for ya. Wear a mask
Didnt dull any of your bits? What kind of bits? Im guessing my jigsaw blade is just steel?
I used tungsten carbide end mill bits, 4 fluted, at low depth of cut and low feed rate but about 800 rpm, on a mill
For fiberglass cutting, you’d typically use a carbide, diamond toothed bit / burr. . Note that this doesn’t refer to the cutting surface being coated with artificial diamonds (different purpose), but rather the tooth shape further up the tool shank. These burr-type tools exist with different cutting tips as well, I typically use a regular endmill type.
Here is an overview: https://carbideprocessors.com/ata-tools/fiberglass-cutting/
Note that up- and downcut bits exist, if you’re cutting thin plate stock, you often want to use a downcut bit to prevent the cutter from trying to tear the stock upwards during cutting and ripping bits and pieces out, or tearing the stock out of its fixture.
I assume this is will be a one time job, so just get a cheap import bit - it will only be good for a handful of cuts, but will also only cost a few bucks. If you want some mid-range, decent cutters, you can look at
https://bitsbits.com/product-category/whiteside-router-bits/straight-cat/fiberglass-router-bits/
If you’re doing this freehand with e. g. a router, do yourself a favor and go outside. In any case, even outside, wear a proper mask (at least N95 rated) - you’ll produce fine epoxy dust, and breathing that in is linked to all kinds of lung diseases, plus cancer. No joke, overexposure to that stuff really turns your life into a miserable shit show.
If you have a CNC, I assume you know what you’re doing, have proper dust collection etc. Even if so, still wear a proper mask if it’s not an enclosed machine with certified dust collection.