Inspired by the 3D printed gauss gun on thingiverse I decided that it could easily be cut and done in (svg here)
Saturday, 25 February 2012
Friday, 24 February 2012
Thursday, 23 February 2012
This laser cut has been kicking around for some time so I thought it would be a good idea to get it to a functional state. It's not perfect so expect another revision in the future.
Conventional ballistas use twisted rope as a power source at the base of each arm. I decided to use elastic bands, but when they twist they don't supply as much power (insert questionable physics). So I kept the bands and arms slightly off centre this way all the power comes from stretching the bands rather than twisting them. It seems to give a fairly good kick, launching that pencil 10 metres or so. Round the corners of the wood off though as my elastic bands rub and snap quick frequently. (svg here)
Wednesday, 22 February 2012
While NortHACKton were over on Monday Steve decided he'd like to get a bokeh lense cover thingy cut. So we converted his files over to the approriate dxf format and cut them out, he then spent the rest of the evening fiddling with taking photos of things, see the results below and photos here.