Homework - Sarah Adkins
Chris Ellerby
Admin
Homework for live workshop student Sarah Adkins
0
Chris Ellerby
Admin
Comments
Anyone else misunderstand this? I sent an email to the team. Other than that it's pretty good so far.
43 = 0.089"
http://www.engineersedge.com/drill_sizes.htm
What I do is drill both holes simultaniously (so everything's in line), using the smaller drillbit. Then tap the hole that you want to have the threads and then use the bigger drilbit to open up the hole that the screw goes through.
How much force did you use to get the rod in the U-joint? If you pushed it in by hand, you might be able to get it out by clamping the rod in a vise or gripping it with a pair of pliers (maybe wrap a rag or rubber band around it, so you don't damage it) and pulling on the U-joint whilst rotating it back and forth a bit. Otherwise, you could try drilling it out. Or leave it there, if it won't come out anyway ;-)
I've been trying to find a chart like this but the ones I found fall short. I'm posting what I have so far. I didn't get the 2-56 button head screws in but in an insane stroke of luck I was able to drive to an industrial supplier about 3 minutes away! The town I currently live in never has the supplies I need. For this project I had to order from at least three suppliers.
I've been using my flex shaft to help me cut and sand down edges and it's been very useful for the bit of brass near the shaft. I was able to attach the large collar pretty easy that way.
I'm back in business and was able to substitute the 2-56 button heads for socket heads. We'll see how that works.
I just have to measure where to put the third servo. The cardboard head you see is my bat head prototype. So far people have been telling me it needs eyes.
This project has definitely been very rewarding and flexing those problem solving muscles is great to do again. As far as experience goes I've had much more to do with 3d printing and modeling than I have with physical building for a while now.
After this I'm going to have to build the head, cast it in foam and go all in on making the head move. If we can post sketches you can see what I've been working from to block in the main forms.