RUG/Pennsylvania/State College/Printers/PSU Unit Clear

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Revision as of 20:00, 10 April 2012 by Dcm5154 (talk | contribs) (Added info on RAMPS upgrade)
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This page is for information about the PSU Unit Clear. This unit is of the Mendel/Prusia hybrid variety. All of the printed parts were printed by other units in our group.

Repsnapper Printing Parameter Key: Extrude Material Width: Tells the material height, how thick a "slice" is, and the height number is equal to the thickness. Extrusion Multiplier: How much ooze per length and this parameter is related to the speed. Lowering the extrusion material causes less material, and raising it causes more material Layer Thickness: Is the distance between strips on the x and y axis. Infill Distance: the higher the number means less lines or makes it less dense. The lower the number means more lines or makes it more dense.

Conversion to RAMPS

After the monotronics died on Blue printer, it was decided that it should be converted to RAMPS. This will allow two things to happen: First it will allow the blue printer to print again, and secondly, it will provide a way to callibrate slic3r for the the three new printers being built. Several things had to be done to allow RAMPS to work with what blue has.

We exchanged the TechZone tip management board with a new fancy one from makerbot. This was deemed easier than trying to get the TechZone tip management board to work with RAMPS. This means wen now have three sets of wire going to the x-carrage: the hot end power, the thermocouple wires, and the extruder wires. These will have to be managed appropriately.

We had to edit several portions of Marlin firmware to work with our ohm. Mostly we had to change things to get our steps per millimeter and such working. An important step is making sure that the "#define ENDSTOPS_ONLY_FOR_HOMING" is commented out to make sure that it can actually home by hand as per our standard printing procedure.

Another important thing to note is that the pinout for the optocouplers need a crossover cable.

Eventually we will put up our firmware, but it's pretty alpha right now.

Operating Specifications

Operating Specifications
Name Status Design Electronics Firmware Extruder Temperature Comments
Clear Clear Squirting Hot Plastic Ohm RAMPS Marlin ??? 155C

PSU Unit Clear - Current Condition


[1] A video of our working extruder! (Oct 18)

On October 25th 2011 the PSU Unit Clear (a.k.a RepRaptor) successfully completed its maiden print job. Below are a few photographs of this milestone!


[2] Working z-axis finally! [3] Our first being printed!

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