This design is an el cheapo version of Meticulous Maynards sled and z axis. Since i had a 3/8" acme threaded rod and nut already i decided not to spend the $30 on a z axis, although by the time all was said and done i maybe saved $5 and endedup with not quite as nice as if I’d bought the ready made z axis. Anyway here is the first version:
For the linear slide i used 3/8" steel rods from home depot and these: https://www.walmart.com/ip/IGUS-RFI-0608-12-Flanged-Bearing-3-8-IDx3-4-In-L-Pk-5/41000231
There were 2 big problems with the design:
- The plywood clamps that hold the router interfered with the ring system when in the lower corners of the cutting area:
- The brackets holding the z axis had way too much flex in them which was introducing backlash into the system, and i was worried about doing some damage just removing the sled from the chains.
So i redesigned it and here is the result:
To tighten the plywood clamps to the router i inserted 2 bolts and used a hose clamp to snug it up. Honestly not sure how well this method will work but we’ll see.