Monday, July 20, 2009
The Cable Tie Track Trick
I had another nutty idea all of a sudden. Would cable ties work as a precision track? So I rolled a very funny-looking gear by hand and found it might. I put a section of it in the jig we use for making Darwin gears, and it came out a little strange but definitely worked.
As you can see, I didn't break the jig or anything - the polymorph (yes, I dyed it black with candle soot) was just a little too cold. Stabbing it with the wrong size screwdriver for a shaft didn't help either. However, it is getting late and I must away. And soe once more to bedde...Vik :v)
Labels: cable tie, pinion, rack, track
Tuesday, April 17, 2007
You can't spread a bit of CAPA on your copper
Yesterday I bought a piece of copper-clad board and tried sticking it under Zaphod. The idea being to deposit a trail of CAPA on the copper and then etch the exposed copper. Unfortunately, it looks like copper makes a nigh on perfect non-stick surface for CAPA extrusions. Even after cleaning with contact cleaner and cranking up the heat, I couldn't get any CAPA at all to stick to the copper.
Looks like time for plan B; the etch resist pen.
Vik :v)
Looks like time for plan B; the etch resist pen.
Vik :v)
Labels: board, capa, circuit, etch, pcb, polymorph, track
