Thingiverse
Printrbot Jr J-Head Platform by siskulous
by Thingiverse
Last crawled date: 4 years, 5 months ago
When my Ubis hot end died I replaced it with a cheap, Chinese V6 knock off and converted to a Bowden extruder at the same time. The J-Head adapter I've been using works OK, but I wanted something better. This will replace the entire extruder platform on my Jr. As an added bonus, once it's done there will be less wood to warp.
And yes, I realize that there are probably not many people left still using a Printrbot Jr.
V1 turned out to not fit my hot end correctly. v2 was a really tight fit. It was intended to be that way, but it was too tight, requiring me to heat the plastic up and force it onto my hot end. The end result, though, is that my hot end is held rock solid in the platform. I was originally going to make a v3 that didn't require this step, but after having used the v2 for a while I've decided that improving upon it is probably beyond my ability. It works extremely well.
Some explanation of the extra bits: That arm off to the side was originally intended in Richyoungblood's design to add a threaded rod to the Y axis to give it some added stability. I'm using it to mount an on-off button for my lights. Said lights are mounted on the little platforms coming off the bottom of the platform with holes for zip ties. I am working on another remix to attach a LED light strip holder (because my lights are a light strip - not the original plan, but much less work) that will attach to this using those holes as screw holes.
And yes, I realize that there are probably not many people left still using a Printrbot Jr.
V1 turned out to not fit my hot end correctly. v2 was a really tight fit. It was intended to be that way, but it was too tight, requiring me to heat the plastic up and force it onto my hot end. The end result, though, is that my hot end is held rock solid in the platform. I was originally going to make a v3 that didn't require this step, but after having used the v2 for a while I've decided that improving upon it is probably beyond my ability. It works extremely well.
Some explanation of the extra bits: That arm off to the side was originally intended in Richyoungblood's design to add a threaded rod to the Y axis to give it some added stability. I'm using it to mount an on-off button for my lights. Said lights are mounted on the little platforms coming off the bottom of the platform with holes for zip ties. I am working on another remix to attach a LED light strip holder (because my lights are a light strip - not the original plan, but much less work) that will attach to this using those holes as screw holes.