If I decide to try printing my own, is there any trick to cutting them as perfectly as possible? I envision them looking like crap if I just trace and cut with scissors...
Print the inserts on the Avery labels.
If possible, avoid touching the printed areas.
Cut a row or column from the sheet.
Place the row/column face down on a piece of paper (for visibility) on top of cardboard. (cutting surface )
Peel off the backing-paper.
PROTIP: There are bumps on the back of the outer rim of the diffuser that mate with the plunger. Plan ahead so the insert aligns with the diffuser bumps that align with the plunger which aligns with the microswitch which points in the desired direction for neat/easy wiring
and properly aligned inserts.
The 4 indexing marks (surrounding the P2 image) are slightly outside the area that the diffuser disc will cover.
Place the diffuser on the insert -- near edge first, line it up, then carefully drop it into place.
Use an exacto knife to trim the excess. The edge of the diffuser is a great guide.
A *tiny* spot of gel superglue will affix the diffuser to the plunger, keeping the diffuser/insert from rotating.
Be sure to let the glue cure fully
before assembling the button, unless you want to play a messy game of
amateur CSI.
Scott