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Piston Keychain (Low Cleanup)

by Tez_Gelmir, published

Piston Keychain (Low Cleanup) by Tez_Gelmir Jan 22, 2013
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Summary

Miniture Piston Keychain has been modeled to have very low clean up required by adding supports & radii. I also separated the bigend to aid printing plus I think the little bolts give it a cool mechanical feel.

Parts Required:
1) 2x M3 x 10mm socket head cap screws.
2) 2x M3 nuts.

All should be available from a hardware store or fastening supply store.

Instructions

Print the Piston Body, Conrod & Bigend with the following settings:

Infill 100%
Layer Height 0.2mm
Number of shells 1
Feedrate 40 mm/s
Travel Feedrate 80 mm/s
Print Temprature 230c

Printed the Roll Pin with the following settings:

Infill 100%
Layer Height 0.1mm
Number of shells 0
Feedrate 40 mm/s
Travel Feedrate 80 mm/s
Print Temprature 230c

Assembly:

1) Simply assemble the conrod bigend using the M3 nuts & bolts refering to the photos as a guide. The bolt holes shouldn't need reaming as they are slightly oversized.
2) Ream out the piston body & smallend slightly with your 3mm hex key.
3) Pop the smallend of the conrod into the piston body making sure the holes line up.
4) Push the roll pin into the piston body as far as you can by hand.
5) Use a pin punch to carefully tap the roll pin into it's recess.

Enjoy!

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Comments deleted.

I'd like to redesign the Conrod for better printing. do you think you could upload that file? thanks

Mine snapped within a day, think it may stay off my keys! haha

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