Easy wooden repstrap

A simple easy to construct repstrap using only

• some basic hand tools
• timber and plywood
• liquid nails and hot melt

Video http://www.youtube.com/watch?v=iDms-eyPZ-Y

Build a 3d printer without any printed parts, except for the extruder. Use the money required for buying printed parts to get a good extruder instead.

The objective is to create a repstrap or a temporary 3d printer that anybody can build at home using cheap and easily available materials, to learn about 3d printer and print their own printed parts required for their next printer.

No vitamins are wasted, except maybe a short length of timing belt. The design can accommodate longer smooth and threaded rods.

This design is taking Prusa i3 as reference. So the vitamins required are:-

• 6x smooth rods
• 1x M5 threaded rod
• 11x LM8UU linear bearings
• 4x stepper motors
• 2x 608 ball bearings
• pulley and belts
• 1x coupling

Wood cutting need not to be very accurate or require great skill. Drilling just have to be accurate enough to be able to mount the steppers. Accuracy is required only in alignment during assembly.

The build volume is small, about 120mm x 120mm x 100mm but good enough to print out parts required for the next printer build. The idea is just to build a temporary printer. So there is a lot of wastage in terms of build volume and rod length in return for rigidity of the printer.

Update 20th Sept. 2014
Using 60 pound Spectra braided fishing line for y-axis. It is working better and easier to build.