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Old February 17th, 2012, 06:31 PM   #1
red87chevy
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Default how to cut tires?? hot knife is to slow!

What dol you guys use to cut tires??
I got 8 hours into a 44 and its still not done anything work really good?
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Old February 17th, 2012, 06:33 PM   #2
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Old February 17th, 2012, 06:35 PM   #3
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butter knife
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Old February 17th, 2012, 06:36 PM   #4
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4" grinder. I have tried it all and the hot knife works the best. Make sure its real hot and ya have atleast a 12 pack
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Old February 17th, 2012, 06:53 PM   #5
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Old February 17th, 2012, 07:05 PM   #6
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I've been useing a piece of 3 foot 1 inch pipe sharpened and put in in the wood stove for a minute and it rips chucks but still to slow cuz you gotta reheat
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Old February 17th, 2012, 07:19 PM   #7
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the tire cutter is the only way to do it correctly. suck it up sally
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Old February 17th, 2012, 07:21 PM   #8
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ideal tire groover. Should only take about an hour per tire.

preheat the tires if you can. putting them in the sun on a warm day does wonders. otherwise put them in your garage, aim a torpedo heater at them for a 20 minutes while trapping the heat with a tarp.
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Old February 17th, 2012, 08:06 PM   #9
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The idal knife is what I use. Its cheap, but it works. I do them on the vehicle, with a 500 watt halogen light shining on the section next up to be grooved. I spent about 45 minutes per tire on my 38.5x14.5 SXs.

Now, if you want to spend bucks, the rilfits are nice but several hundred bucks.

If you are removing large chunks, then I'd make a couple custom big sharp metal hunks into knives and have them in a fire, or use a sawzall with a razor knife.

Not sure how you are spending 8 hours on 1 tire, unless you are completlely comp cutting it.
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Old February 17th, 2012, 08:08 PM   #10
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Quote:
Originally Posted by Haggar View Post
The idal knife is what I use. Its cheap, but it works. I do them on the vehicle, with a 500 watt halogen light shining on the section next up to be grooved. I spent about 45 minutes per tire on my 38.5x14.5 SXs.

Now, if you want to spend bucks, the rilfits are nice but several hundred bucks.

If you are removing large chunks, then I'd make a couple custom big sharp metal hunks into knives and have them in a fire, or use a sawzall with a razor knife.

Not sure how you are spending 8 hours on 1 tire, unless you are completlely comp cutting it.
You are a "Smart Man" .......and I feel like an idiot.
I should have used my paint lights sitting in the corner of my barn instead of trying to keep the heat gun blowing on the tire while I was cutting.
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Old February 17th, 2012, 08:10 PM   #11
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Ideal tire groover and use a blow torch to preheat the tire, I can do a single 44 inch tire in about 45 mins to an hour
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Old February 17th, 2012, 08:12 PM   #12
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I got that tip from someone else on here, so I can't claim credit for it. But it worked decent for me.

The biggest thing I found with the knife is it works better to do a shallow groove, then make it deeper with a 2nd, maybe a 3rd pass. Can be faster than trying to take a big deep cut, that takes too much heat out of the knife.

slower - faster it seems. Going easy is also a lot better on the blades. If you ahve to push hard, they don't last. I cut my own blades by slicing thin strips off razor blades and heating thme with a torch into the right U shape. They last longer than the ideal blades.
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Old February 17th, 2012, 09:06 PM   #13
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I'm comp cutting 44 hawgs into v tread style I take almost 25 pounds off each tire so it takes awhile just looking for a good way to do it
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Old February 17th, 2012, 09:37 PM   #14
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THen yeah, an ideal knife is probably overmatched.

I'd make a blade, like a 3/8" thick piece of steel with a sharp edge ground in, weld on a handle, and keep it ripping hot with a charcoal BBQ or a torch or something, and use that like a hot chisel to take big pieces off.
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Old February 17th, 2012, 09:47 PM   #15
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Old February 17th, 2012, 11:31 PM   #16
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I know it sounds stupid but look how fast he cuts these boggers with a wood chisel and a torch.
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Old February 18th, 2012, 09:47 AM   #17
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This is how I cut mine... And under an hour each to.do it, I have the groover and blades to.do it if you need help





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Old February 18th, 2012, 11:24 AM   #18
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Quote:
Originally Posted by BennettisTileCo View Post
I know it sounds stupid but look how fast he cuts these boggers with a wood chisel and a torch.
cutting boggers - YouTube
Yeah, thats kinda what I was suggesting. Haven't seen it done with a chisel, but if you don't mind killing one just for that purpose, it should work fine. You want as much thermal mass as possible.
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Old February 22nd, 2012, 09:42 AM   #19
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Best thing i found so far is a piece of pipe hot ande sharp
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Old February 22nd, 2012, 04:32 PM   #20
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What size blade on the hot knife are you using? There's no way you should have 8 hours into.one tire
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