Matthias has produced a series of woodworking machines made primarily of wood. His youtube videos typically follow his design developement and experimentation process through to the finished product. He provides these designs for a small fee with detailed instructions and sketchup and sometimes AutoCAD models. I have purchased a few of these designs to date.
Many of his designs have complicated parts made from birch ply or use 3/4″ timber boards throughout which make his designs prime for adaptation to CNC.
The design and build of his sanding machine is detailed here on youtube.
Modelling in Fusion 360
For the sander, there was only a sketchup file available. File conversion between sketchup and Fusion360 does not seem to be straightforward if at all possible. As I was also new to Fusion360, the project afforded me the opportunity to practice modelling a complicated structure with multiple parts.
Sub-folders were made for each of the sub-assemblies of the sander. These were:
- Motor mount
- Base and guide table
- The sander body, drums and tracking mechanisms
- Dust chute
Parts for each of these sub-assemblies were drafted from the plans provided by Matthias. Each of the parts were then imported into a master assembly.
Below are a series of photos showing the process of CNC-ing and assemblng the structure. Everything took half a day! Jobs were done per sub-assembly to keep things managable.
Most things slotted together with a little bit of convincing from the mallet.
For the rollers, I had to add screws to connect a few disks together because the glue bonds very poorly to the melamine coating on the outside of the plywood (as it is designed to do). I inserted three screws through a few disks, skipped a few and rotated 60 degrees and did it again for the full width of the roller.