Friday, August 12, 2011

milling gears

I can make module 1 gears from acetal on my milling machine, using a 1mm diameter slot drill, for the teeth. I used a 6mm to rough it out and a 3mm slot drill to cut out the 4mm hole.


I made some gears and a casing, as an experiment.
Parts were coming out lozenged, but I fixed that by pushing on the table until something bent, so the axes are more perpendicular to each other. I tested this by checking the nozzle distance from the table at each of the corners of travel.
I was pleased with the gears I made. I ran them in a little with some brasso to get them free running.

Tuesday, August 9, 2011


This is not milling, I know, but...
I bought a 3D printer from here
It arrived this afternoon and I assembled it and got it to work, kind of.
The parts come unstuck while being made, which cause them to warp a bit.
Apparently I can fix this by sticking some Scotch Blue Painter's Tape to the machine bed, instead of using the green paint, they supply.
I don't know if I can buy any of this tape in Malvern, England.

 I coloured the heart with a permanent marker. You can use solvent based paint for painting ABS, though.
The heart was almost 1mm undersize in both axes.

I liked the sound the plastic part makes when I drop it onto the table.

Thursday, August 4, 2011

Making for money

I have been doing quite a bit of machining work recently.