JG Maker Artist-D Matrix / Hemera
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***2021-05-20 Update - Updated the parts to remove the Y offset which caused a small loss of build volume. - Removed most of the X offset also so should run closer to stock values all round. In order to do this E1 backplate had to get a lot thinner and the only way to keep the rigidity was to also replace the X carriage (E1 only). - Modified the parts so they can mostly be printed without any support, I think there is one area on E2 that needs a touch of support. - The electronics cap has been modified to allow better access to the ribbon cable - I've also added in a specific E2 backplate for Hemera and Matrix, that accounts for the small difference in Y nozzle distance between the 2 extruders. I have a new design that I'm running on my Artist which I'll probably add a remix for (bltouch closer to nozzle (reduced offset = more reliable probing) and 5015 fan incorporated into body to unobstruct the view of the nozzles). I therefore won't make any more changed to this design, STEP for this design is included for anyone to modify. ------ I was able to modify/tune the stock extruders to be consistent but fundamentally they are a poor design and with no gearing, no *proper* way to tension and no access to the gears without disassembly so I decided to replace them. I had two TriangleLabs Matrix Extruders lying around so designed these mounts to replace the stock extruders. The goal was simply to mount them, use better (higher flow) radial fans for part cooling, add bltouch and for it not to be a spaghetti of wires once done. Matrix is a very nice clone of the e3D Hemeras, though the nozzle distances aren't quite the same. If you use these mounts with Hemera, there will be a very small Y offset of a few mm. The Matrix and Hemera do not have the nozzles in the centre of the extruder, hence E1 has a large backplate to align the nozzles (as E0 and E1 are mounted in mirror). I did not design any method to move E2 up or down, such addtions just lead to movements in XandY also which needs to be constantly recalibrated. Instead, the Matrix extruder have a set screw which allows you to lower the heatbreak. We are talking a few millimetres at most so the adjustment there is appropriate. I did not design the fan mounts, I am instead using these well designed spreaders: https://www.thingiverse.com/thing:4762088 - Matrix (I am using these) https://www.thingiverse.com/thing:4031637 - Hemera (Use these for Hemera instead) !Make sure to print them mirrored (one normal, one mirror). I used 5015 Radial fans: https://www.amazon.co.uk/gp/product/B07DB7DLMM/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1 - They seem pretty decent so far Hardware wise, I used an assortment: M3x10 Button (If you only get one size, get m3x10 with whatever head you want) M3x6 Button M3 Brass Inserts - Heat press into the printed parts M4 Brass Inserts - Heat press into the printed parts The fan used an M3x20 Socket each The Stock PCBs just need cutting down, there are no traces anywhere near so no risk. I printed in Sun Lu PLA+ but intend to reprint if / when they start to fail, PETG is the obvious choice though I may try Volcano PLA next. I use prusaslicer and painted a few minimal supports on some parts. I'll also be uploading my purge bucket redesign. **Uploaded STEP for those who want to modify.
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