Maslow4 Kobalt and PCB 3D printed mounts
I have uploaded (I hope) the STL files for the parts to mount the Kobalt router.
Print one each of the Shim, PCB_MountTop, PCB_MountBase and 2 SupportBar(s)
I used ABS.
Slide the PCB_MountBase up the router with the Bar sockets facing up. The motor’s brushes will be between the Bar Sockets and the brush mounts will drop into the saddle made for them.
Mount the PCB_MountTop to the PCB and Fan/Cover with the square index hole towards the power connector.
Slide the support bars into the MountBase. Then slide the PCB onto the bars.
You can glue both ends of the bars, or better yet pin them so they are removable.
The bars are a snug fit but will never take the vibration that is coming.
I ended up drilling through the 4 bars and mounts with a .073 (1.85mm) bit. This is just tight enough that a M2x16 (1.91mm) bolt will keep everything in place. Be sure to mark the bars and sockets so that you can get them in the same orientation if you remove them. Otherwise those holes will never line up again!
You can also just cut up a paper clip and use that as a pin with the ends bent over to hold them in place.
Insert the Shim into the bottom of the arm stack. It will NOT reach all the way to the top clamp. Line up the slot in the shim with the slot in the clamp rings.
Slip the router down into the arm stack. The top of the shim has a chamfer to help with entry. The router will slide down until the MountBase sets on top of the first clamp. This clamp will clamp on the larger portion of the router not the part that is “machined”. The bottom clamp will close on the shim.
The holes for the nuts in the MountTop are not placed perfectly, but the standard bolts will fit.
I have added the source code to create the parts in OpenSCAD
Shim.stl (983.7 KB)
PCB_MountBase.stl (52.5 KB)
PCB_MountTop.stl (217.0 KB)
SupportBar.stl (1.6 KB)
Shim.scad (859 Bytes)
PCB_MountBase.scad (1.5 KB)
PCB_MountTop.scad (2.7 KB)
SupportBar.scad (318 Bytes)