It was time to upgrade my secondary video card on my trusty MacPro3,1. I first goofed considerably with a Radeon 5250. I even went so far as to bust out my old firmware editing tools to change the vendor id in a feeble attempt to get OS X to use it without needing to modify kexts. Then I heard that more recent nvidia cards are supported by NVIDIA’s “web” OS X drivers. I swapped the 5250 (with its firmware restored) for a GeForce GT 720.
I opted for the ASUS 2GB implementation of the GT 720. I’m a big fan of fanless heatsyncs.
The key jist being that I found on complex prints, I would typically get a few major slips in the print. There often were also places where the print delayed in a location for a time, this left scars too.
Ultimately, a $10 SD board and a quick firmware change later and my prints were vastly improved.
I’ve missed playing with 3D printing since I mothballed my printer years ago. It was shelved over major pains in getting the extruder to work properly. I also wasn’t especially fond of working with ABS plastic, which feels pretty toxic to me.
A few weeks back I decided that my old printer, while in bad shape, was still most of a 3D-printer. I had been looking at ready-made products I could potentially buy, but I wanted the satisfaction of doing most of it for myself. I knew right-off-the-bat that I’d be replacing the extruder as it seems clear to me vast progress has been made about that point.
It’s taken me weeks, but I’ve got the machine operating, at least in all regards except for an extruder. I’ve documented the key steps I took to get this machine in to a usable state again on my Episode 1 project page here.