This is a PostScript program to generate optical encoder wheels (suitable for printing out on a transparency). Unlike similar programs, it is highly flexible and has many features, such as:
-Correct inside and outside diameters, regardless of line width.
-Quadrature capabilities, with adjustable phase difference.
-Automatic scaling of text size.
-Optional index track, with adjustable size or automatic fitting to segment size.
-Automatic page filling with cutting allowances.
-Most features can be turned on or off.

Yup, outside the buffet at the Excaliber Joli took 3D scans of us and burned us a cd. This really needs some cleaning up and a backside to be solid, but I'm really impressed with the scan. It got the texture of the argyle lines on my sweater!

Update: It's been on my agenda to print myself out and so I've uploaded an edited version.

Update: Another updated version!

Use this to guide your cables with.

This is a mount for a YAESU FT-857 head unit for the dash board of your car

If you happen to be a HAM , and you have a makerbot/reprap ( i'm sure there is more than one of us) and a FT-857 then you are SET!

This is the working alpha cut , I have some more mods to do

An openscad parametric pulley for ball chain

Safety is job #1, quality is also job #1, as is innovation.

Sometimes you might be working on a project and need a way of releasing something heavy without the risk of it landing on you. This self-locking release latch can be attached to carabiners on both ends and released by pulling on a string or wire through the middle hole. If the material being held is the right size the latch will lock shut without a spring.
Due to the geometry the force needed to release the latch is pretty much independent of the load being held, this prevents the latch from jamming.

It was inspired by the sea catch release latch and Vise-Grips.

Always wear your safety glasses. Do not use for large loads without checking the material properties and calculating the maximum load. Always design with a reasonable factor of safety. Don't be dumb, be safe.



youtube.com/watch?v=oQEopLOSnLg

This is the second half of my openscad.org gear sets.

I couldn't get the top and bottom parts of the double helical to union properly, so I ended up offsetting the bottom piece by 0.1mm :( It skeins and prints fine though.

This thing is part of a set:
- spur gears: thingiverse.com/thing:1336

UPDATE: I'm printing some gears and noticed a couple mistakes on the openSCAD script: the variable 'orientation' wasn't doing anything and the value 'extrudeInDiam' was in fact being used as radius. They're both fixed now and I uploaded a new version of the script.

Inspiration from "Oval Gears" by Billion.
Wanted to expand model to 4 gears and discovered that the linkage had to flex - square to parallelogram during rotation.
All elliptical gears here are identical and work due to odd number of teeth.

This is for mounting a Parallax Ping))) ultrasonic sensor on a servo. This is useful for robot navigation and mapping.

There is also a Shapeways optimized version available.
shapeways.com/model/80059/sonar_servo_mount.html

This is a circuit for driving bipolar stepper motor drivers. More information on the RepRap site: make.rrrf.org/smd-1.2

A fun little open source Arduino powered robot to play around with.

A simple plastic tool for scraping swarf out of t-slots in a milling machine bed or a lathe cross slide. It is for slots that are 16mm wide and 6mm high.

A calling card with working planetary gears. Astound your friends, frustrate your nemisii.

(Update: I've moved the gears slightly to the right, reducing the number of cut parts to assemble.)

This is a 4-pin tumbler lock with a key and display case. Insert the key and turn clockwise to get a smiley face!