Greetings all; I've modified the drive slightly, updated the file on my web page, and added a README. One question way down, long prior explanation. One of the helpfull folks on this list, looking at my code, PM'd me with one possible solution which involved saving an .stl of what would then be used as an import to become the third argument in a difference. This is a capability I hadn't learned about, and it opens up the possability of fixing another of my printers that in the coarse of this project, I found was not able to handle PETG temps in its hot end on a daily basis. I have several failed printers piled up that I'd like to restore, my fav of the bunch is a CR10-S Pro V2. I had bought a Sherpa direct drive kit to put on this Creality CR10-S Pro V2, one of the biggest bed slingers ever made, and whose hot end I found was not able to tolerate the 40C increase in temps on a daily basis. I just found a kit of .stl's on thingyverse that will put several different versions of the all metal hot-ends that do PETG temps ok, such as the E3D hot ends. And this kit has facilities to mount and use several different direct drives, but not the Sherpa, which is currently the lightest of the direct drive kits, but its skeleton frame mounts by straddling the top of the hot end as opposed to all the others that mount to the face of the motor. I have thingyverse kits that do mount the Sherpa, but they would grossly interfere with the E3D hot end mount and were not intended to be fitted to the CR10-S Pro V2 which seems to be quite unique in its x carriage design. So, here is the question: Can I import these 2 different mounting styles as .stl's, blending the Sherpa's foot print into a mount for an E3D hot-end and cooling system? That to me, looks like the best way to rescue this failed CR10-S Pro V2, which did a great job of printing, for the first 3 PETG prints. After that it was a hot end rebuild to stop the leakage before every job but even that wasn't enough to get it thru a 2 hour print. The leakage would start, pile up on the print, catch on the hot end and rip it loose from the bed. It seems to have enough motor power to throw around a nearly 400mm square glass bed and retain decent 100mm+ printing speeds. Thanks everybody. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene>

I'd suggest you model the backplate/carriage of the printer, showing the tapped fixing holes as cylinders. Import the stl files into separate modules and translate the modules to locate them over the appropriate fixing holes/cylinders (most likely you will need to model an intermediate adapter plate). Once in position join the parts with cylinders/cubes as required. When you have the final model, section  it around the important regions, print those to check that it will fit on the real thing. Make sure the part cooling nozzle cools the part - some of the thingiverse designs are rubbish, and ensure that the exhaust of the hot end cooling fan does not blow down on the part. After that, you'll probably realise it would have been  better to design it from scratch. On 15/08/2021 00:38, Gene Heskett wrote: > Greetings all; > > I've modified the drive slightly, updated the file on my web page, and > added a README. > > One question way down, long prior explanation. > > etc...

On Sunday 15 August 2021 07:36:09 Ray West wrote: > I'd suggest you model the backplate/carriage of the printer, showing > the tapped fixing holes as cylinders. This may be the best idea, because the carriage plate on this one bears ZERO resemblance to the ender3/ender5 or the regular CR10-S plate, the Pro v2 is completely different animal. And I just found a problem not noticed when it was on the x bar of the machine. I need to remove around 1/8" of all 3 axle bolts holding the roller wheels, they project thru the front of the carriage far enough to prevent the hot end from seating on its mount pillars. Clearance needs to be such that the axle bolt end sits flush with the top of the nylock nut. 1/8" beyond it hits the hot end, holding it out of whack. This print it turns out is for an E3D V6 on a CRV2, whatever that is, it gets no hits that are printers on a net search. And the adapter mount for a CR10 looks like the ender-3 because the CR10's I have found aren't anything near the size of this printer. It is both huge and different. The kit of pieces I am lookiing at is thingiverse 4561720. But its apparent this printer is an orphan despite wearing the Creality name. This prusa is working moderatly well, but I keep turning the flow down but am still getting overflow signs at 50% flow from its own tune menu. But I'm getting closer at 50% than its gotten before. I've taken the plate off so I can get at it, measure it and model it in OpenSCAD since it looks like I'll have to invent this wheel too, darn it. But its at least "square", something I would never accuse the good looking Ender 5 of, cuz it isn't. The whole frame is out of square. > Import the stl files into > separate modules and translate the modules to locate them over the > appropriate fixing holes/cylinders (most likely you will need to model > an intermediate adapter plate). Once in position join the parts with > cylinders/cubes as required. When you have the final model, section  > it around the important regions, print those to check that it will fit > on the real thing. Make sure the part cooling nozzle cools the part - > some of the thingiverse designs are rubbish, and ensure that the > exhaust of the hot end cooling fan does not blow down on the part. > > After that, you'll probably realise it would have been  better to > design it from scratch. > > On 15/08/2021 00:38, Gene Heskett wrote: > > Greetings all; > > > > I've modified the drive slightly, updated the file on my web page, > > and added a README. > > > > One question way down, long prior explanation. > > > > etc... > > _______________________________________________ > OpenSCAD mailing list > To unsubscribe send an email to discuss-leave@lists.openscad.org Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene>