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2, 3, and 4 inch wafer aligner

A wafer aligner designed to center 2 inch, 3 inch, and 4 inch wafers on a 45mm chuck.

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Description

This is a wafer aligner made to fit 2, 3, and 4 inch wafers on a 45mm chuck.

I have printed it in both PLA and PETG successfully.

Cost savings is compared to a typical design is ~$1000. Depending on the material and infill settings, this part costs about $1.00-2.00 to make.

Materials and methods

I have printed in both PETG and PLA successfully using the following settings:

PLA: 188 print temp, infill=30%, 0.12mm layer height, use supports, top/bottom thickness of 1.20mm

PETG: 210 print temp, infill=35%, 0.15mm layer height, use supports, top/bottom thickness 1.80mm. I used a larger infill and top/bottom because with PETG thicker is better as PETG is a very stringy/viscous filament.

Once the part is finished printing, remove the support as well as the front tab which is included in the design to help prevent the front two points from bowing up during printing. Be sure to sand the surfaces with the support and the front tab smooth. I used a glue stick for adhesion, also using heated bed may help but is not required.

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Comments

58b9d149b6ee49f67ed2ca0d9ac768a1?default=blank&size=40matthewpollack published this design ago