Flutterby™! : Tube coping calculator

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Tube coping calculator

2008-03-16 19:16:19.286965+00 by Dan Lyke 4 comments

Tube Coping Calculator, enter tube diameters, angles and offsets, and it'll get you back a pattern you can use to cut the joint shapes with. Via.

comments in ascending chronological order (reverse):

#Comment Re: made: 2008-03-17 00:56:00.099778+00 by: meuon

While very cool and interesting, why not do it the way I've always seen it being done, and a couple of times, done it myself: Mount the pipe/tube in a vice or jig at the precise angle needed and chop the end with a drill bit on a drill press.

Or is this for people like Dan doing bike frame metal work with a hacksaw blade and a grinder?

#Comment Re: made: 2008-03-17 01:29:56.011903+00 by: Dan Lyke

I think it's for people doing metal work on tubes, but one reason to worry about the drill bit in the drill press is that unless you're using a Forstner bit (and even then you've gotta be careful), the bit will wander when cutting on an angle.

#Comment Re: made: 2008-03-17 21:04:33.993793+00 by: meuon

I've used Hole Saw Bits like these when cutting tubing with excellent results. I guess the difference is I'm using a 200lb 4' tall drill press with a clamp designed for holding tubing. Note: when cutting tubing at an offset, you don't use the centering drill bit.

Forstner bits are for wood.

#Comment Re: made: 2008-03-18 13:14:23.895299+00 by: Dan Lyke

I've had bad luck with hole saws, but I've mostly used them in wood, where they're particularly ill suited. Ended up with too many split saws.

And, yeah, Forstner bits are for wood, but as I get better with this wood stuff I expect to be joining wood cylinders at odd angles...