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Re: New arm design for Simpson style printer.

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Image may be NSFW.
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I'm building a wooden H.A.I.B. version of Simpson (made from discarded items), I started a few days ago :)

Today I was at the hardware store looking for a timing belt to replace the herringbone gear.
What I found potentially useful was the HEAVY duty anti slip sandpaper for steps (black, not gray).
With a little force it felt like no backlash and no axial/transverse slippage, and there's adhesive on the back side. But it made a sanding/rubbing noise, very noticeable. It cost $0.69/ft, if you buy the 4 inch wide, slice it into strips. I think I might give it a go, but I want to explore a few "free" ideas out first. I need 9 feet total so cost would be $2.70 to $5.40, depending on width, good value, but not free.

I'm using dia 4.5 inch end caps from PVC pipe, for the gear portion, and I found them in the attic of my garage. I'm going to try to slice off some of the cap to reduce weight, and improve it's looks. I'll take a close up pic so you can see the pencil schematic I've laid out.

I found some half round wood in the garage too, which should work well for the bearingless parts.

The wooden arms were found free curb side over the past couple of years.

Glass windows were found curb side last year, too big to bring into the house, and it will have to be cut to size.

I figure this will be the cheapest way for me to make a 3D printer. I'll document it as I go!

I also bought the epoxy today to glue some of the parts together, as I don't want to see it fall apart, I just want it to work well enough to make me a Simpson.

I'll edit this post later tonight with Added a pic of my collection of found materials for the HAIB Simpson.

A2

The cheapest, and easiest 3D printer: hacking junk. :)

haib, half donkey is best

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