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Cutting Very Thick Glass Slabs

Posted: Wed Aug 16, 2017 1:26 pm
by Judd
I put this in the New-Bee section because I must be doing something wrong.

So, I bought the Harbor Freight 10" tile saw.
Love it.
And I bought the His Glassworks blade. This one to be exact:
10 Inch x .040 Inch Result Medium Diamond Blade

So, I'm sawing slabs of glass, approximately 3" wide by 10" long.

It takes FOREVER!!!
OMG, to saw one slab is like 2 hours.

What am I doing wrong?

Should I use a rougher blade, then sand the glass with diamond grit?
Is here a machine that will feed the glass into the blade ?
Am I using the blade wrong?

What?

Re: Cutting Very Thick Glass Slabs

Posted: Wed Aug 16, 2017 4:27 pm
by Kevin Midgley
you could tie a pail of sand to the cutting table to pull the glass into the saw.
Murphy's law states if something will go wrong it will...especially if you are not there watching.
Only takes a moment with no water to destroy a blade.....

This may be way quicker:
https://www.aliexpress.com/item/1PC-Hea ... st=ae803_1

Re: Cutting Very Thick Glass Slabs

Posted: Wed Aug 16, 2017 10:28 pm
by Tom Fuhrman
you don't say what the thickness of the slabs are. I used to cut slabs that were 1" thick and 12" square in a few minutes with a MK saw and a 10" blade I don't know what you're doing wrong. lots of water , a good saw, and a good blade should do it. I also used to cut large pieces of optical Schott crystal for sculptures that were 3" thick and they never took anywhere close to 2 hours.

Re: Cutting Very Thick Glass Slabs

Posted: Fri Aug 18, 2017 8:48 am
by Judd
If it will upload, this is an example of what I'm doing.

Re: Cutting Very Thick Glass Slabs

Posted: Fri Aug 18, 2017 8:49 am
by Judd
the finished product here.

Re: Cutting Very Thick Glass Slabs

Posted: Fri Aug 18, 2017 11:24 am
by DonMcClennen
You didn't answer the question.. "How thick"??

Re: Cutting Very Thick Glass Slabs

Posted: Fri Aug 18, 2017 12:42 pm
by Judd
Sorry Don, we miscommunicated. I said in the initial post it was 3"x10" long. The block is 3" thick.

Re: Cutting Very Thick Glass Slabs

Posted: Mon Aug 28, 2017 6:18 pm
by Valerie Adams
That saw does a better job with a blade stabilizer on it.

Re: Cutting Very Thick Glass Slabs

Posted: Tue Aug 29, 2017 9:15 am
by Judd
I'll try that too. Thank you.

Re: Cutting Very Thick Glass Slabs

Posted: Sat Sep 09, 2017 8:59 am
by Marty
The Result blades may need to be dressed before the first use to remove any plating material covering the outer layer of diamond. Run the blade (wet) through a chunk of brick or silicon carbide sharpening stone; just a couple of cuts should do it. Some people have a fetish about dressing the blades, sometimes before every cut. Don't.
I've had Result blades that lasted years when treated respectfully.

I just sawed a pattern bar 2" thick by 6" long by 4" wide in half the long way- one 1" cut on top, flip and cut again- it took about 40 seconds and had me wondering- is your plate 3" thick?
What does the whole thing weigh?

Re: Cutting Very Thick Glass Slabs

Posted: Mon Sep 11, 2017 9:28 am
by Judd
When I cut my glass blocks, I'm cutting through at least 3" by 6" to 10" inches in length.

Re: Cutting Very Thick Glass Slabs

Posted: Mon Sep 11, 2017 9:40 am
by Marty
3" wide, ok. How about thickness? Are you making a pot melt (or whatever) that's 3" thick (by 3" wide by 6-10" long)?

Re: Cutting Very Thick Glass Slabs

Posted: Tue Sep 12, 2017 9:25 am
by Judd
3" is the thickness. I am sawing through 3" of glass, 10" or so inches in length.
Yeah, I'd doing pattern bars (see pics above).