Digital designs for real, physical objects. A Universe of Things!

Magic Screw for Makerbot

Created by
VeryWetPaint
Created on Dec 6, 2011
Derived from Wrong Way Nut by VeryWetPaint

This is a 'kit' for designing or building magic screw threads that will (hopefully) build on a Thing-o-Matic and similar hobby printers. This should enable you to build a bolt and nuts so that one nut tightens normally while the other seems to turn the wrong way as shown in this video (this is the new model data):

youtube.com/watch?v=gx_OKYA3_Iw

The ancestor model did not build accurately on hobby-type 3D printers because (I think) the geometry had atypical overhangs that could foreseeably flatten out during extrusion. Instead of fighting those overhangs, this Magic Screw version tries to exploit them by building overhangs in straight lines between supported walls. It's just a conjecture (I don't know if I'm right) but it's illustrated in my blog at mysd300.blogspot.com/2011/12/magic-screw-for-makerbots.html

Downloads

Sort By

Date

Popular

File Type

bb bolt.stl

13 mb / 119 downloads / 3 months ago

bb bnut.stl

3 mb / 105 downloads / 3 months ago

bb fnut.stl

2 mb / 98 downloads / 3 months ago

bwbolt.scad

6 kb / 48 downloads / 3 months ago

Who's Made It?

They Like It

What's this?

Magic Screw for Makerbot by VeryWetPaint is licensed under the Attribution - Non-Commercial - Creative Commons license.

© 2011 by VeryWetPaint

Instructions

Try building the three STL files as-is and see if they'll work exactly like the video.

If the model needs tweaking, or if you'd like to optimize the appearance of the trick threads, download and edit bwbolt.scad using OpenSCAD. Follow the instructions (comments) for some simple adjustments, or revise the whole thread profile as desired.

Be sure to share a derivative if you get a model that works better or looks better!

Magic Screw for Makerbot

Downloads

Who's Made It?

They Like It

Instructions

Comments

Latest From The Thingiverse Blog

Join Thingiverse®!

Things

Tools

Blog

About Thingiverse®