A customizable thumb spanner/wrench design that fits on a keyring. I've got a few examples of this file - details below.
22/05/2016 - Customizable Version Added
Unfortunately I can't get the text rendering to play nicely with the customizer so I've removed it from this version. It is still in the file with some instructions on getting it working -- the modules and variables are commented out though so if you want something with labels you probably want to download the .SCAD file and go from there.
Uploaded an 8mm version (M5).
Added a double sided propeller spanner for keeping handy on a key-ring so that it doesn't go missing when needed. It is designed to fit M5 and M6 nuts. The M6 fits the Emax 2204 2300kv motors.
M5 = 8mm.
M6 = 10mm.
(Flat to flat on the outside of the nut/bolt.)
A quick guide to building a spanner/wrench that works for you.
- Set the 'testing' variable to '1' ~ it should be there already, but still. A big tube should now show through the centre of the spanner.
- Measure the flat-to-flat length of the nut that you are wanting to use the spanner with and enter this into the 'test_diameter' variable. It's a good idea at this point to add in extra length for any material shrinkage you normally get from your printer. 3 to 5 mm would probably be a start.
- Adjust the size of the 'upper_dia' variable until the tube just fits into the inside of the spanner without intersecting the edges.
3b. Repeat steps 2 & 3 for the 'lower_dia' variable if you want a second size on the spanner. Just make sure that the 'lower_dia' variable is smaller than the 'upper_dia'. Bad things will happen if you don't, well, might..
- Adjust the rest of the variables to your preferences. Make sure that the top and bottom of the render are flat. If they're not, try reducing the 'handle_thickness_2' variable slightly.
- Finally set the 'testing' variable to '0' to get rid of the reference tube. Then output the file and print.