Having figured out where the heatbed failed on the Prusa i3 Mk3 printer it’s now time to re-wire it. Hopefully in an improved manner.
Continue reading Prusa i3 Mk3: Rewiring the Failed HeatbedTag Archives: repair
Heated Bed Cable Replacement on the Prusa i3 Mk3
Recently the heated bed failed on my Prusa i3 Mk3 (from Prusa 3D). But on the up-side it wasn’t the bed itself, but the cables.
So I seized the opportunity to make a video of the troubleshooting process. There’ll also be a follow up video on what replaced the original cable.
Continue reading Heated Bed Cable Replacement on the Prusa i3 Mk3
Pelouze Scale: Inside an Antique
The Pelouze scale I use for quick weights (as used here)has stopped zeroing out. Something appears to be sticking in it’s rack and pinion assembly. So I’m pulling it’s tabs and taking a look inside!
This scale’s at least 50 years old. And with a bit of lubrication I’m hoping to have it around for another 50 years.
Interestingly, aside from the polymer rack and pinion driving the front dial the scale seems little changed from the original patented in 1898. Earlier examples are on display at the Made in Chicago museum and website.
Construction of the Pelouze scale chassis consists of stamped steel with slot and tab construction. In addition there’s a metal dial, steel pins and hinges, a spring… And that’s about it.
So there’s a look back at a little piece of history. Next up I’ve got a pile of (more) cheap filament from EBay (that I used as a test weight). These rolls promise to be within 2% of tolerance and we’ll see how they stack up!