Homebrew PCBs

Once I get in the teflon flats I should be able to generate simple, hi 
temp, spur gears once  I have the gear & shaft diameter and teeth counts 
required.
If the shaft is not D shaped and requires a set screw it gets more 
complicated. In such a case I'd propose a drill/tap set screw on the 
shaft and notching the gear to slot onto that.
What might be useful is I could re engineer the gear ratios to slow down 
the laminator to better suit the purpose.