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Cutting the gimbal

A project log for Open LIDAR

This project is to build a motorized gimbal mount to convert a laser distance module into a 3d LIDAR.

caveradamcaver.adam 07/07/2016 at 01:430 Comments

Tonight I decided to make some time and cut the gimbal pieces. I ended up doing by hand because I wanted to use ABS and the local hackerspace has problems with neighbor complaints if they put something smelly in the laser cutter. So good old jigsaw to the rescue.

Throughout the process I kept one [fairly straight] edge available to measure from. My square showed it was pretty straight as it came from my source. This meant if I got a little crooked on a cut I could measure from the straight edge instead of the crooked edge.

I used my laser cutter file as a guide and started by cutting one piece at a time. At first I was using a straight edge to keep the jigsaw straight, but I was having a problem with the blade heating up and starting to melt the plastic. As soon as I started cutting freehand (along a thick pencil mark) the blade stopped heating up.

While working I decided that this heavy duty 0.2" thick ABS is probably strong enough that it only needs one triangular brace on each side. Worst case I have to cut an extra brace out of the left over plastic.

Next steps for the project is to start drilling holes. That's going to take a little longer to set up drill pattern templates.

Pardon the funny shadows... the sun had already set and I don't have a lot of light in the garage.

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