On Tue, 26 Mar 2019 10:33:56 -0500, you wrote:
Hi Harvey,
? I just checked out the images of the board holder. Looks pretty good.
Thanks. It does indeed work, since I just put parts on a board using
that same holder.
A slight redesign would make the 3D printed arms a bit wider. The
nuts are captive in the plastic.
Harvey
Thanks,
Dave
On 3/25/2019 4:46 PM, Harvey White wrote:
I've finished a simple design for PC board holders for use with a
microscope. It's pretty rigid, and does not rotate.
It's made of 2020 aluminum extrusion and corner brackets. These are
available as parts to help make 3D printers.
The board holder itself (gold anodized aluminum) was a one time buy.
You could duplicate that, or use a PC board holder from Panavise.
Those would need support.
That's the part where you'd need a machine shop at your disposal.
There's another option, and that's to take some aluminum bar stock,
I'd use 1 x 1/4 by whatever length. Drill evenly spaced holes in four
three inch sections. Those take thumbnuts (or capscrews) and mount on
the side rails.
To hold the board, you'd really like to have a lathe. I'd cut v
shaped grooves around the circumference of an aluminum post and mount
that so that the board edge is held by the groove.
If you can't do that, then simply take some aluminum spacers, fasten
them to the ends of the aluminum bars, and let those to into the
mounting holes on your boards.
You'll find that the angle brackets do allow the extrusion to twist,
so I'd recommend top plates for 90 degree corners.
If you wanted to, you could add some lights, perhaps the gooseneck
lamps that IKEA sells...
Harvey
