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  #11  
Old 02-25-2020, 11:59 AM
JBFab JBFab is offline
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I bet a guy could smooth that plastic out and use it to make a sand mold and pour an aluminum die if one were so inclined.

Nice work!
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  #12  
Old 02-27-2020, 04:35 PM
MrCrankyface MrCrankyface is offline
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...a smelting oven is on my bucket list...

GWIZ: I printed this in PLA plastic for cheap prototyping.
And yes, the lathe bit is a bad habit that I find really hard to stop with.

Work continues on trying to improve the bend result..
This is how the pipe gets held when bending.
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And this is what happens when you try to bend too much. The pipe starts slipping in the holder and you end up crushing it instead.
Hopefully fixing this will result in near-perfect bends.
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Added a bunch of sandpaper and squeezed it real tight ...
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Aaaaand even a 180* looks pretty mint! You can see it's more flat towards the end of the bend, that's because my plastic die split...
It might hold up if I print it in co-polyester but feels like a waste when I have other materials lying around.
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So here's my next step ... Solid aluminium.
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  #13  
Old 02-27-2020, 06:32 PM
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arizonian arizonian is online now
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It's been my experience that even a steel die will crimp the tube if the tube wall is too thin or the radius too small. YMMV
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  #14  
Old 02-28-2020, 03:11 AM
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GWIZ GWIZ is offline
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I was looking at the bender I posted and they have the dies lined up,
cant say it will work better just maybe if you can bring the dies closer together.

you can see if you move the dies on center they make a perfect circle the same diameter as the tube.
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  #15  
Old 03-01-2020, 12:41 PM
MrCrankyface MrCrankyface is offline
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That and a much stronger die seems to have done the trick!
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Used a small piece of pipe and rough sanding paste to get that second die in near-perfect shape and colinearity.
Applied some grease before trying to draw the pipe.
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Here's the two dies.
Unfortunately the diameter was too small to get my different positioning holes drilled into(they'd intersect the pipe form) but this small diameter is easy enough to bend by hand so it only really needs 1 position.
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So this finally let me do the last bends and finish my air system. Time to clean I guess.
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  #16  
Old 03-01-2020, 09:12 PM
Don_S Don_S is offline
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Those lights are very nice. Are they available someplace us Americans can purchase them?

BTW. Your air piping is meticulous. Sure beats my system. I'm slipping. I had a better air piping system at my last rental place than my current shop that I've been at for 17 years.

Don
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  #17  
Old 03-02-2020, 02:27 AM
MrCrankyface MrCrankyface is offline
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Thanks! I'm real happy with it!

I couldn't find the same brand as I use(Zebra) but they're somewhat equivalent to these:
https://www.amazon.com/Allsmartlife-...3133813&sr=8-1

The important specs being 2x2ft, 40W and 4000k color.
Takes almost no space and spreads the light really good.
The ones in the link seem to be dimmable but IMHO that's not an important feature so you might be able to find cheaper without dimming function.
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