Laboratory Shaker (2): The Seesaw, Just Mechanics

I intended to do the controller first, but I ran out of PCB material …
↓↓↓ Complete description, time index and links below ↓↓↓

Instead of waiting until the PCB material for the controller arrives, I used the time to build the mechanics. Well, just the seesaw really. The drive, consisting of a servo mount, servo, servo arm, connecting rod and pin, I’ll do later.

In order to match the look of my laboratory water bath (link below), I’m using transparent polycarbonate for the two part housing again. But this time I don’t screw it, I glue it. After adding an steel axle, two bearings and two grub screws I’m done.

00:00 Intro – ran out of PCB material
01:52 First cuts – 10 basic parts out of 4 polycarbonate plates
05:50 Lots of sanding – mainly because one plate was crooked
10:54 Some Drilling – for the axle, the pin and two grub screws
13:47 Cutting threads – for two M3 grub screws and the pin
14:33 More cuts – on the two bottom side plates
16:17 Cutting steel – that is the axle and the pin
18:27 Experimental milling – of radii on the bottom side plates
21:12 Some filing – of a slot for the servo cable
22:08 Test fitting – and a bit of scraping to make the axle fit
25:03 Gluing – everything together
30:25 Assembling – really just pushing the axle through
30:43 Wrap-up – short test, next steps, bye

Laboratory Shaker    • Laboratory Shaker  
Laboratory Shaker (3): The Controller, PCB and Enclosure    • Laboratory Shaker (3): The Controller...  
Laboratory Water Bath    • Laboratory Water Bath  
Mailbag: Servo, Power+Signal Cable, End Mills, Bushings, Linear Rod, Acrylic, Acrylic Glue, Taps, …    • Mailbag: Servo, Power+Signal Cable, E...  

#laboratory #shaker #seesaw #build #doityourself #diy #robertssmorgasbord