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Our local hardware store also does plumbing. I do enough business that I can get a piece of pipe cut to length free. Even walking in the door new, it shouldn't cost more than a couple of bucks to have a nice clean & straight cut just the way you want it.
I converted my old Makita 10" miter/chop saw after getting a new compound miter saw for trim work several years ago. The old Makita is pretty HD, and I've used it to cut metal (with an abrasive blade), tile (with a diamond blade), and framing lumber and fire wood. It's one tough old tool. The precise accuracy is not what it was when new, but very capable for what I use it for. And I use it alot. Would have expected the abrasive dust to do the motor bearings in by now, but she's still cutting/running fine after several years of this abuse.
Not sure it has an 8 1/4" capacity though.
A trick I use to cut pipe straight is to put a hose clamp around the pipe and line up one edge with where you want to cut. As you tighten the clamp it automatically finds it's own "square" and you can either cut alongside it with a hack saw or zip cut.
I can't believe the number of responses I got on this thread. ALL GREAT IDEAS!! I ended up using the clamp and drawing a line, cutting with a hacksaw and putting my angle grinder in a vise then squaring up the tubing against it. It's as perfect as I need it to be and once I finish putting in the new 220V line for my welder I'll be all set. Thanks again everyone!
I use a Mikita miter saw, with a 14" metal blade that has been used enough to fit on the 10" Makita saw. I love the angles I can now cut. Saw is strong enough to handle good size projects in my shop. Cash flow and the need to get a job done can be powerfull allies.
I use a sawzall (reciprocating saw) with a bi-metal blade. It cuts faster than an hacksaw and usually is easier to keep straight. When grinding to square up the ends, I wrap the pipe with 1" masking tape, keeping the tape flat and smooth as I go around, and grind down to the edge of the tape and no more. Then I grind a chamfer at 45 degrees and weld it.
Hope this helps in the future.
Years ago I bought a cheap chop saw and some new wheels. I burned the motor up on the chop saw before I finished with all of the new wheels. I agree with Rosati. I have had a sawzall for 10 years and I love it. I call it a hacksaw on steriods. I use it to cut all of my thinner stuff. The thicker stuff I use a plasma cutter or torch. Then I square it all up with a grinder. All of this is more portable than my chopsaw was. Won't go back to a chop saw now.
Obviously there are a lot of ways to make a cut. The advantage to a good metal cutting chop saw or a bench band saw is that they will save a lot of time getting the job done. When you make a cut with these machines it's done accurately in the time it will take to wrap the masking tape around a piece to true up a hand cut but I acknowledge that sometimes a person gets a lot of satisfaction doing work with alternate methods. My son can't weld worth a cent with a torch or an arc but you should watch him crank up his forge, cut his parts on the anvil, hammer them into shape and finish with a fusion weld that's better than anything I can put together. New and modern ain't always better.
The problem with chop saws is the cut ends are way overheated by the time your done. This in turn weakens the steel and once welded, will be prone to cracking because it's too brittle. Cold cutting is really the only way to go. For stands and such, any method will work, but rollcages and structural items should be cold cut.
The problem with chop saws is the cut ends are way overheated by the time your done. This in turn weakens the steel and once welded, will be prone to cracking because it's too brittle.
Rosati, I know that heat changes the molecular structure of the steel but I don't understand why the heat from the chop saw would be more damageing than the heat from the welding process which appears far hotter than the heat from the chop saw cut. I was taught to draw the arc weld off the dead edge of the joint to prevent weld embrittlement but have never been concerned about the cuts. It appears I need more education. Can you explain what happens to the steel during a chop saw cut as opposed to an arc weld?
Thanks!
Last edited by tdford; Feb 24, 2005 at 09:29 PM.
Reason: matter of ettiquite
I use both a cut off saw and a Makita mitre saw w/metal blade. Had to use a blade that had been worn down a bit to fit the Makita. The use of the mitre saw lets me cut at various angles, which I can't do with the cut off saw. Just gives me an extra option in the shop.
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