Treadwell WED-15 droid build : Part 14

3D Printing:

March

I needed another way to operate the claw. The bowden tube idea using a metal guitar string, wasn’t working well enough 😢, but it still needed a servo to operate it.

I dug around in my servo box and remembered that I had this nano servo I bought back in 2020 for the ‘life form scanner’ project idea.

The claw’s motion only requires a light operation and the servo has just enough power to move it.

I redraw the end parts to accommodate fitting the servo inside it.

Exported the stl files to be able to print on the Tevo at home (works was already in use printing overnight parts). An hour print time for each half.

Only a few more adjustments to this design, one, making the tube the claw fits into, longer, another, to increase one side to make it thicker. Maybe another internal adjustment for the servo horn to have a bit more space.

The second version needed one more addition 😂 …..as I forgot to put in the slot for the servos tab. And before this got printed, I added holes for a brass threaded insert to secure the two half’s.

The carbon fibre tube got destroyed on trying to remove it, so I’ll be using a spare aluminium tube I had left over from the life form scanner project. Am thinking, the tube could be glued to one half of the unit and then screwed onto the other half, or it could be pinned in place.

Woodwork:

The base bottom board was screwed into place, again, counter sinking them.

I then used P40 (fibre glass resin) to fill in the gaps front and rear.

I needed to get some photos for celebration.

So I assembled most of WED together for this shot.

The base isn’t glued together yet, I’ll wait till I have the wheels and motors sorted out.

Electronics:

I ordered 10meters of servo lead so that I could make up my on lengths. I also found and ordered my new favourite tool lol.

I honestly don't know how I've managed over all these years 😂.

The nano servo plug needed to be removed so that it's contacts could be threaded through into the aluminium tube. I connected it up with a length of new servo lead, which I fed up through the upper arm and then into the mast.

I used some braided tubing to group together the other two new servo leads, one for the neck and one for the head/eye servo.

This was as far as I got with time restraints, and the other main project needed for Celebration, so WED-15 will just be a work in progress on display.