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Thread: Cold saw build
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3rd September 2012, 11:40 AM #1Banned
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Cold saw build
I'm thinking of building a cold saw for my next project. probably a two speeder with 1hp motor and a coolant pump. Anyone built one?
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3rd September 2012, 12:15 PM #2
Ive not built one, but am in the market for a cold saw.
What type you going to base your unit on?
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3rd September 2012, 02:33 PM #3Banned
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Type
Probably either the wet cold saw type, which spin at around 40rpm or perhaps the Makita drop saw type, which I beleive spin considerably faster (1400rpm I think) and don't require coolant. I'll have to research them both a bit more.
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3rd September 2012, 10:55 PM #4Member
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Have built one.The worm and wheel are out of a truck brake slack adjuster.I think the blade can be up to 10 inch.Pic 5 shows the method I used to adjust the blade to cut
straight and square.No coolant on mine. Motor is 1 hp @1440 rpm. I think the blade
does about 80 revs.Needs more hp.
P.S. I haven't used it since I got a bandsaw and if you want a slack adjuster or two I
have plenty of free ones
John
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3rd September 2012, 11:05 PM #5GOLD MEMBER
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3rd September 2012, 11:10 PM #6Member
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Neither can I but it would have been pic 5 if I had posted the rest
John
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3rd September 2012, 11:23 PM #7Banned
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Great job
Great bit of work there, what a rascall you are! I was thinking of using pulleys and V belts, but a couple of questions: How does the blade cope without coolant and the extra rpm? Is the second vice for the offcut necessary?
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3rd September 2012, 11:36 PM #8SENIOR MEMBER
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I have a home built one that my father made, I'll see if I can find it under the pile of cuttings and take a couple of pic's tomorrow for you tongleh, mine doesn't have coolant either, I just give it a squirt of oil on each side of the blade every few cut's.
I doubt that you would have success using a belt to drive the blade shaft because you need a fair bit of torque, belts would be very problematic.
John
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3rd September 2012, 11:37 PM #9Member
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I used a cheap blade which used to"catch" and a brobo that worked well.
I think the brobo had "set" on the teeth.Coolant/Lubricant probably would have helped.
Revs seemed ok to me and the vise just seemed like a good idea at the time.
John
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4th September 2012, 09:58 AM #10
Rascal,
What a great idea using the slack adjuster. Beats paying $1200 for a cheap cut off saw which may get used 10 times a year.
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4th September 2012, 10:46 AM #11Banned
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Truck brake slack adjuster
I assume you'd be able to get a truck brake slack adjuster from a truck wreckers, not familiar with them.
I think the number of pulleys (not to mention their size) and belts required to get the blade spinning slow enough might be a problem. I have seen motors with gearboxes and I know Hercus used to make a range of boxes. I have also just discovered another toothed cut off saw 'Rage', I might look into, after my experiences with Makita, I woudn't touch them with a 10' pole. More research I think.
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4th September 2012, 06:16 PM #12SENIOR MEMBER
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tongleh here is the cold saw my old man made, he made his own gearbox including the worm and wheel, I can't read the plate on the motor but I think that it is 3hp.
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4th September 2012, 06:38 PM #13Senior Member
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That's awesome... until now I would never have thought about building one, but I suppose someone had to invent the thing... something else to add to the 'roundtoit' list...
Even if you had to buy a worm and gear I reckon it would be substantially cheaper than a Brobo.
Adding a suds pump wouldn't be that hard. For small jobs a gravity-fed overhead tank would be just fine and get rid of the pump altogether.
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4th September 2012, 06:43 PM #14Member
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That is a serious saw
John
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4th September 2012, 07:26 PM #15Banned
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That's a saw
What a ripper, looks like a rotating table. If you ever want to get rid of it, I can help.
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