FEA Thermostat Knob Replacement Worklog

Prints are back from Shapeways.com  Blue on the right is printed in Versatile Plastic.  Middle knob is printed in Detailed Plastic.  The points on the exterior of the knob are a little too sharp. I redesigned and have more coming.  The 3d prints will need to be painted likely to get a closer color match.  Still haven't worked out the best way to do the infill.  Flood filling with a syringe may be the best option but is messy. Costs for printing each knob should be $7-10 depending the plastic.  Shapeways has all kinds of materials.  You can get a knob printed in gold or platinum if you're looking for that extra bling.  Multicolor prints are possible but too expensive for my tastes at $100.  If there's interest, I'll post the texture files.  

Once I get the design dialed in, I'll try an FDM print in ABS and PLA.  The version 2 STL can be found here:  V2 STL



I received the resin this week for the casting of the original knob.  The plan is to cast in urethane resin.  I'm looking forward to trying the color match to the cornflower blue.  I've got two molds ready to go but it will likely take a few iterations to work out the sprueing and orientation.


I hope to have time this weekend to work on the color matching.  More pics then.