Band saw blade

If the wall thickness is not too thick, my understanding is that a substantial Russian woman can proly cut it with her teeth. +/- .100

Well, the one's with moustaches, at any rate.

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Those are more common than bandsaw blades in Siberia. The OP is in Serbia, a bit to the south.

Hello, Vladimir. I suggest that for tubes like this you move to an abrasive chop saw. They work very well and very fast on thinwall tubing. If you must use a bandsaw, then look for one with an extremely high blade speed and try a friction cut.

GWE

snipped-for-privacy@gmail.com wrote:

1,5mm is still rather thin stock for a bandsaw, and even a 24 TPI blade might not be fine enough for production work. And stainless steels are difficult to cut or drill even in the best of circumstances. (I do it JUST often enough to know this.)

If the burrs left from an abrasive cut-off saw will be a big problem that has to be fixed later on in the manufacturing process, and you don't mind spending for the right machine, look into "abrasive waterjet cutting" machinery - 30000 PSI to 60000 PSI water (roughly

5000 BAR) with a cutting abrasive in it, aimed at the stock.

They are NOT cheap, but they are very useful and they cut just about anything. With a CNC cutting head, you can have a sculptured profile on the ends of the tubes for ready-to-weld fit-up at all sorts of odd angles.

No heat affected zone from Plasma or flame cutting, and the edges are very clean and straight.

-->--

Up yours PT. Plonk!

Thank you all on the info.

The waterjet machine is just too expensive for our application as we are not cutting that amount of pipes for this machine to be cost effective.

We have also tried with abrasive chop saw but there is problem with perpendicularity of the cut, as blade often diverts from the desired path, no matter what's the pressure on the tube. We are often cutting two corner cuts on a single pipe (handrails) so these two MUST be perpedicular to a staircase plane or handrail will not stand right in it's place.

Might want to go small, 1/2" blade, for fine pitch. The $199 HF 4x6 saw might do you, can put bimetal blades, etc. on it. Really a neat item. Will mitre, as well, altho you will probably want to make a good fixture.

Also, there is something called a Roll-In saw, which is like a DoAll vert. bandsaw, except the blade is twisted 45 and the table rolls into the blade, for an automatic feed. A really neat item. Cupla people here have one, I think. Used, about a grand. Also, some Doall saws have a weight/auto feed feature, kind of hokey, and I think they have an attachment that will twist the blade 45 deg for long tubes. The Roll-In and Doalls take any blade up to 3/4, I believe.

You might also consider a cold saw or a steel cutting circular saw blade. I have no experience with either of those on thin wall tubing, so maybe someone with experience will speak up.

Dan

This may not completely help you in Serbia, but it _is_ possible to get 24 tooth per inch blades. :-

I'm sorry that I don't know any suppliers close to you, but there _will_ be someone!

good luck Mark Rand RTFM

I'd prefer a cold saw for that. Band saws aren't very good on that, no matter how much you tension the band or adjust the guides.

One more thing to the 16TPI bands you got: You have to cut them in (no matter what size). Out of the factory, they are much to aggressive (that's what good manufacturers tell you). Cut

100 cm^2 of massive steel with reduced feed and then cut your sensible tubes. You will notice a _big_ difference.

Contact them:

They do have up to 32TPI and are a German manufacturer. Maybe they do have a dealer near you.

Nick