Only took a year, I have to say this was much harder then building a printer from scratch.

My config files are located here if anyone else wishes to do the same. Now that I've done all the hard work It won't be too hard to convert these machines.
https://github.com/drphil3d/stratasys/blob/master/README.md

CAD Files for the extruder adapter mount https://a360.co/2ZEHYXw
Panel Due mounting bracket https://a360.co/31LCPhZ
Blank LCD bracket https://a360.co/31Mda8Y
4mm to 6mm PTFE Adapter https://a360.co/2IurMCe

Video of operation https://photos.app.goo.gl/3UqF72nFuzfWhSet6

Wiring

I went with the easier approach

I'm now working on a stratasys dimension 1200sst, but it was working when I got it vs dealing with a gutted uprint.
The stock hotend runs on 120VDC. I just read the service manual, it documents all the test points and you can just plug into those to get the sensor data you need.

Do you have a cad model of the photo above?
This is one I found on grabcad and have modified.
https://a360.co/2UyWBvr

Here's the printhead I'm modifying to fit a nema 17 stepper and a bondtech BMG.
https://a360.co/2yiIT7l

Here's an adapter plate to mount the duet in the 1200SST with GEN2 Electronics
https://a360.co/2X0NHIN

if you want to print high tempature materials you will need a water cooled hotend, just run the water lines to the outside of the chamber, you will definitely need the cooling the printer is very well insulated.

Yeah, that's exactly what I was thinking. Change the jumper to 5V on one of the fan outputs and connect that to the heated chamber, then figure out how to update the config to use the fan pin for chamber heater control.

Another option I was just thinking of, is I could breadboard a transistor and some resistors to signal the chamber heater using one of the 3.3v pins on the duet.

I would drive the heated chamber mosfet directly, however they used a mosfet that has a control voltage limit of 15v, otherwise I could just feed the heated bed output directly to the heated chamber test point pin (TP2).

This is my first attempt at a mounting solution for a bondtech bmg extruder. The pin in the middle really gets in the way.
The stock hotend has a number of drawbacks that limit its usefulness.

• Not going to print PLA, or anything even the slightest bit flexible the way it's designed. That PC-ABS 430 has a very high glass transition tempature. The oem hotend (liquifier) isn't really meant for printing any low tempature materials.
• non metric nozzle size is going to make slicing interesting
• No or very little retraction. They call it a liquifier for a reason, pc-abs has some unique properties designed for this printhead.
  

I traced the pins and found that J15 is the same as J17 on the 1200SST, I was able to enable the heated chamber and other accessories. Now I face another issue, how do I control it. I can't use the heated bed output on the duet sense that would feed 24v into a 5v pin...aaaahhh.

This thing is such a beast

My PDB is different than yours, It looks like the ports have different labels. I was able to connect the +5V Reference Test point to Power Enable to power the board on. But that's also powering the Stepper drivers and other things I don't necessarily want turned on. I still need to figure out how to apply power to the Chamber heaters, looks as though the relay to the left of the SSR needs to be enabled first.

Stepper Drivers

It looks to me like the chamber heaters are driven by a mosfet, that first must be enabled by a relay, I',m not completely certain. My goal is to try and tap into the signal inputs for mosfet and relay and wire that to the heated bed output on the duet, that way I wouldn't have to cut any wires.

I see pin 16 of J15 is power enable, I'm assuming that it wants +5v for power enable?

Yeah, it looks quite similar to mine, although the print head board is different.

I haven't really cut anything yet, I was going to leave the optical end stops intact and what ever other sensors that I could leave for later use.

As for the stepper motors I decided it would be far easier to use the Duet TMC drivers and take advantage of the sensorless homing so that I don't have to worry about wiring any of the endstops. It works quite well, and I have the advantage of being able to use the stall guard feature for crash detection during printing.

I got rid of the lcd and replaced it with a raspberry pi touchscreen. Unfortunately Octoscreen (octoprint UI) won't run when rotated 90*. The Panel Due does not support 90* rotation either. Frustrating.

The stock hotend design is only going to work for printing pc-abs or other high tempature materials that won't deform at lower temperatures. Due to this limitation I'm replacing the extruder assembly with a single hotend for now. I may have a custom 120 watt 24v heater core made for this, the owner of this company is a friend of mine so it makes this easier for me to acquire.
https://ubishotends.com/shop/xx9ppgi6moubdjx5kscfk8md4e8ecb

@AJ-Quick Here is my Github repo for the uPrint & 1200SST
https://github.com/drphil3d/stratasys

@AJ-Quick That is Freekin amazing!!! do you have the pinout of those headers you can share with me? I'm in the middle of retrofitting my 1200SST.

I'm now working on a stratasys dimension 1200sst, but it was working when I got it vs dealing with a gutted uprint.
The stock hotend runs on 120VDC. I just read the service manual, it documents all the test points and you can just plug into those to get the sensor data you need.

Do you have a cad model of the photo above?
This is one I found on grabcad and have modified.
https://a360.co/2UyWBvr

Here's the printhead I'm modifying to fit a nema 17 stepper and a bondtech BMG.
https://a360.co/2yiIT7l

Here's an adapter plate to mount the duet in the 1200SST with GEN2 Electronics
https://a360.co/2X0NHIN