TwisterBlocks Re-spin

youmagine

UPDATE 11.7.2016: Adjusted clamp extension width to 5.95 mm to provide about 0.15 mm of clearance on each side of block channel.This is a placeholder (currently under development) for a re-design of TwisterBlocks by Hrvoje Cop, aka chopmeister. See https://www.youmagine.com/designs/twisterblocks and http://www.chopmeister.com/2013/12/twisterblocks.html. Once I successfully print and verify the performance of my re-design concept, I will post a complete file set. Until then, the provided .stp file can be imported into your favorite CAD tool and .stl files exported, if you are really eager to help me prove my re-design of chopmeister's very clever design. I was not too keen on sacrificing even 4 mm of x and y travel. I use up all my UMO real estate far too often and wish for more already! Accordingly, in this re-design I offset the original TwisterBlocks faces by 2 mm and the screw holes by 1 mm (to keep them centered on the faces) to recover the 4 mm in X/Y travel lost in the original TwisterBlocks design. To anchor the 6 mm rods more securely with my 2 mm shorter twister blocks, I added extensions to the twister block rod clamps that fit snugly into the twister block rod assembly channels. The clamp extensions provide additional support at the very end of the rod. The twister block slots are 2.5 mm deep so I can "get back" all of the 2 mm rod engagement that I lost in reducing the width of the blocks, plus another 0.5 mm more, assuming that the rods are long enough to bottom in the channel against the twister block. If the 6 mm rods are too short to fully benefit from the clamp extensions, I'll just purchase longer 6 mm rods and custom cut them to fit tightly.