Trammel / large compasses
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Parts to build a large trammel / compasses
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Model information
- Source
- Printables
- Category
- Tools
- License
- Creative Commons — Attribution — Noncommercial — Share Alike
To build it you need:
one M6 x 20mm grub screw but you can also use a normal M6 screw and make it pointy with a drill and some sandpaper
one O ring (14 x 2.5mm or 17 x 2.5mm) to hold the pen (or a other rubber band)
one stick 10mm x 20mm and as long as you need, my is 1m
one pencil (around 9mm in diameter works good, but is not critical)
If you want easy rotating tops you also need:
two M4 x 16mm cylinder head screw (a other small head screw works also fine)
two M4 nut
two ball bearing 608 ZZ (8mm x 22mm x 7mm)
To build it:
Insert the grub screw into the “PinHolder”
Rotating head
Insert the M4 x 16mm cylinder head screw into the “Cap”
put one “BallBearingsHolder” on top of the “Cap” onto the screw
put the ball bearing onto the “BallBearingsHolder”
add a second “BallBearingsHolder” onto the ball bearing
fix the ball bearing between the “BallBearingsHolder” and on the cap with the M4 nut
press the “Head” onto the ball bearing
insert your stick into the “PenHolder” and “PinHolder” and screw on the head assembly
put on the pen with the O ring