Parametric Solder Spool Mount for HSW (FreeCad)

I've been learning FreeCad by designing my own accessories for RastaP's Honeycomb Storage Wall. This Solder Spool Holder is my first fully parametric design. The FreeCad file has a spreadsheet in it with all of the parameters. The ones marked in Red are calculated by other values in the sheet so don't change those. The rest can be changed to make this project fit whatever solder spools you use. 

All of the parts in this design are fitted together so as you make adjustments in the spreadsheet it will adjust the other parts to fit.

If there are problems, and I'm sure there will be, leave a comment and I'll figure out what I did wrong and fix it. :-)

Print Settings:

Layer height: .2

Perimeter: 4

Infill: 20% gyroid

Supports: Build plate only. 

Printed with Overture PETG. (PLA would work just fine too)

Printed the Spool Arm vertically (Not a lot of stress on the Spool Arm)

I used a 3mm x 6mm cap head bolt and nut with a washer between the feed arm and the holder.