Monday, March 09, 2009
A small milestone
In which your narrator cuts a power transmission gear out of 3/8" inch HDPE, the thickest milling job yet... do you want to hear more?
Labels: "Clanking Replicator", capa belt gear polymorph darwin reprap, Darwin 2.0, involute profile gears, tin can steppers, Tommelise 3.0
Saturday, February 17, 2007
Pressing Belt Gears
I've pressed 2 sets of belt gears for Darwin using my acrylic moulds. There are 4 sheets of acrylic with alignment holes (the 4 little bolts go in them). Sheets 1 & 4 have 8mm holes in the middle, sheets 2&3 45mm holes. A piece of belt goes around the hole in sheets 2&3 to put teeth on the edge, exactly as per the rig that Ed made. PVC food wrap stops the CAPA sticking to sheets 1 & 4. The trick is not to press too hard or you open up a gap where your belt joins into a loop.
They need a little trimming, but a sturdy pair of scissors does that just fine. Better than a craft knife.
Zach is kindly documenting the process here.
Vik :v)
They need a little trimming, but a sturdy pair of scissors does that just fine. Better than a craft knife.
Zach is kindly documenting the process here.
Vik :v)
Labels: capa belt gear polymorph darwin reprap
