Create a printable parametric mold for casting rubber feet using oogoo. I am currently building a Mendel90 reprap (sturdy, using MDF frame) and plan on using these oogoo feet underneath the base plate.
Almost all dimensions/settings are parametric, including the number of spokes of the foot and the number of molds in the printed part.
The example stls are for single mold and 2x2 mold for casting feet that can be fixed with a 3mm screw and a 10mm washer.
oogoo is great stuff and easy to use, see: http://www.instructables.com/id/How-To-Make-Your-Own-Sugru-Substitute/
This is one of my first openscad designs, one of my first oogoo designs and my first published thing using my first reprap printer for making it, so don't be too tough on me..
Either create your own stl using the scad file or use one of the stls provided (for parameter descriptions see the comments in the scad file).
..1x1.stl is a mold for casting a single foot.
..2x2.stl is a mold for casting 4 feet in one go.
Print the mold using your 3d printer. I have used PLA with the following slic3r settings: 0.4mm layer thickness, single perimeter, one bottom layer, one top layer, rectilinear infill 25%.
After printing, mix an appropriate amount of oogoo (as the molds are fairly small, one or two tablespoons are more than enough for a single foot). I have used a silicone to starch mix of 1:1 for fast setting (see http://www.instructables.com/id/How-To-Make-Your-Own-Sugru-Substitute/ for detailed instructions on mixing oogoo). Color the oogoo using oil paints to you liking (the example feet were cast using grey silicone and some revell paint because that was all I had available).
Quickly press the oogoo into the mold, a used popsicle stick works well. You need to work fast, because 1:1 oogoo sets within minutes. After filling the mold with oogoo, scrape of excess oogoo from the top of the mold. If a little bit of oogoo remains at the sides, don't worry, this will be a very thin rubber layer, which can be easily trimmed of with a pair of scissors after setting.
Wait til the oogoo has set (for me, 30 minutes were enough). Using a tooth pick, carefully remove the foot from the mold. If necessary, clean up the oogoo foot with a pair of scissors.