Category Archives: 3D Printing

Anything related to extrusion printing. Generally with plastics such as ABS, PLA, PET, and Vinyl.

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

Box Fan Filter Variable Speed Fan Build

Building your own box fan filter is a great way to reduce the amount of dust in your workspace. And you can build it for just about the cost of the fan and a suitable filter.

I’m taking that one step further and adding in variable speed motor control inline with the box fan filter itself. For the cost of an additional triac to chop the voltage to the motor I’ll be able to trim the fan speed up or down depending on the amount of noise and airflow I’d like.

Continue reading Box Fan Filter Variable Speed Fan Build

Drill Press Squaring (with 3D Printed Tool)

Last week I was attempting use the Craftsman bench press to center drill Titanium bolts with HSS drill bits.

As you can see I was successful at drilling and an utter failure at drilling straight. In hindsight assuming that the table was square enough because it had been bolted and pinned in place was a mistake.

Titanium bolt with a hole drilled through the threaded side.

Continue reading Drill Press Squaring (with 3D Printed Tool)

Igus Drylin Bushings: Replacing Bearings on a 3D Printer

My Prusa i3 Mk3 printer’s LM8UU bearings were acting up. It could’ve been an issue with the installation. Or they might’ve just been junk out of the box.

Regardless, it’s time to replace them. With three Igus Drylin bushings in-hand I’ve decided to swap those in on the printer, at least temporarily.

IGUS Drylin install on the Prusa i3 Mk3 3D Printer
Continue reading Igus Drylin Bushings: Replacing Bearings on a 3D Printer

Improved Filament Spool Holder (with optional motor)

If you need a spool holder that does the job and has an optional mounting area for a DC brushless motor, here it is. I still need some refinement of the motorization option. But it’s otherwise functional.

Sure, there were quite a few other spool holders. None of the ones I browsed on Thingiverse had a license I liked. So I created my own.

Feel free to use or modify it! If anyone has suggestions post them up and I’ll accomodate them if they’re something I need.

And I also shot a video of putting it together. Along with the features that I’ve added in so far.

Prusa i3 Mk3 MMU 2.0 Banging on Start

If you haven’t seen it yet Prusa’s i3 Mk3 MMU 2.0 printer module offers up multi-material printing using five pre-loaded filaments with a single extruder. The magic happens with a fairly ingenious filament selector module hanging out above the printer proper.

And it works. The selector is adequate at selecting filaments and I’m not seeing much of an issue with it’s functionality. That’s barring wildly out-of-diameter filament widths (1.9mm+ instead of the spec 1.75mm).

However, there seem to be some teething problems with the software design. One of the issues I’ve come up with on that end is the auto detection and alignment of the MMU 2.0 carriage.

On start the MMU 2.0 seems to be detecting the right end of the carriage too soon. Then it hammers against the left side of the carriage when the MMU 2.0 moves back. It’s using resistance on the stepper motor driver and appears to be very sensitive. 

I’ve posted two videos, the first of it working properly and the second of the failing carriage detection. If you’re curious about the MMU 2.0 or are trying to check if what you’re own printer is doing is normal here you go.

Cheapest EBay Filament! Good Deal or Total Junk?

In our new series of videos on YouTube we ask an important question. Is the cheapest PLA 3D Printer filament on EBay a shrewd deal or total garbage?

Initially I’ve weighed out the filament. And over the following weeks I’ll be printing with the entire 2.2lb (1kg) spool to see if it’s worth your hard earned US dollars.

So join me in the shop to see if the lowest priced PLA 3D Printer filament is any good.