Saturday, 14 September 2013

Now the balancing act

So here we are about a year down the track and I have learned a lot.
First thing is that all dxf files are not the same. What I found was that when I selected sections from the cad drawing to be cut and exported from draftsight to dxf files that some of the shapes came out wrong. Curves were the main issue. They would be moved and rotated to odd locations. This means that I then needed to go in and edit them as dxf format for the cam software to pick them up.
This then showed that not all splines joined up and the cam software would not sort correctly. There were also cases of the same spline being repeated so that the cutter would do multiple traces of the same path.
Lasers are brilliant for cutting balsa wood but multiple passes just char to much. You can get away with a dvd laser if all you want is a mark but a 3w is better and a 10w would be excellent.
It is surprising how much weight you need to balance the glider. It's just over a kilo in my case.