Anybody got a Sindoh 3DWOX ? - Page 1
Forum section: electronics / general

author: jmelson
author_rank: Super Contributor
timestamp: June 15, 2021, 01:50:05 am
content: I have a Stanley Model 1, which apparently is the same machine as a Sindoh 3DWOX. I have had a lot of problems with filament jamming. I finally bypassed the cartridge and just fed the filament straight into the extruder drive wheels, and it works fine. The rubber rollers in the cartridge are EXTREMELY stiff, when you try to turn them by the white gear teeth.So, I think that is the issue. Do these rubber rollers swell over time? Do the roller shafts need to be lubed?Any suggestions or experiences would be greatly appreciated!Thanks,Jon

author: nfmax
author_rank: Super Contributor
timestamp: June 15, 2021, 10:13:06 am
content: I have a 3DWOX 1, and I have encountered the same problem, but only when using one particular cartridge. What seems to happen is that the one or both of the rubber rollers slide longitudinally along their axles, to the point that they rub against the supporting plastic moulding, giving a large increase in friction. It can also happen that they move so far the filament is no longer gripped properly between them. I find I can work them back into position easily enough, but they don't stay there - I am investigating glue.For me, this has only happened on the 'two-roller' cartridge design, which has two rollers gripping the filament and a single, small-diameter driving gearwheel. My original cartridge was a 'three-roller' design, which has a larger diameter driving gearwheel & driven roller, and a third, geared roller driving the flange of the filament spool, presumably to help rewind the filament when changing cartridges. This doesn't have the same problem, but it does tend to break filament when the spool is nearly empty, as the flange drive inevitably can't be correctly geared for the changing outer diameter of the filament coil as the spool empties. To avoid this, I unload the cartridge and manually loosen off a few turns before each job, when the filament is running low. Which is a pain. Presumably that is why Sindoh changed the cartridge design.

author: jmelson
author_rank: Super Contributor
timestamp: June 16, 2021, 04:15:01 pm
content: Quote from: nfmax on June 15, 2021, 10:13:06 amYES, EXACTLY! I also saw the rubber had walked down the shaft, and pushed it up to be aligned with the other roller.But, it still seemed that the friction of the rollers was way too high, even when they were in the right position.I'm guessing the previous used had maybe refilled this cart for the entire life of the machine. It is labeled as a PLA cart, and the chip I'm guessing is read by the machine as PLA, but the filament reel is labeled ABS, and a cura slicer file set for ABS works very well.I may tinker with it a bit more before totally giving up on the cartridge rollers. My cart has two rubber rollers, and one gear, just as you mention. If I unload filament, the spool is not driven, and so much filament backs up into the cart that it guarantees a jam, as the filament is all coiled up and catches on internel edges when the print starts. So, I always pull the cart and back the spool up to take up the slack.I think carving a hole in the front of the cart, allowing me to feed the filament into the extruder wheels won't be a big issue, and may solve the problem. If gluing the roller to the shaft reduces friction enough, then maybe that is the solution. I had also thought about doing that.Thanks so much for the comments.Jon

author: jmelson
author_rank: Super Contributor
timestamp: June 18, 2021, 04:07:48 pm
content: OK, I lubed the roller shafts and put it back together. The force needed to drive the cartridge rollers is now about 1/4 of what it was before. I'm guessing the printer will likely run fine as is, and just needs a dot of grease every spool of filament or something. But, if not, I have proved it will run fine if the rollers are just taken out.Jon

author: Brumby
author_rank: Unknown
timestamp: June 23, 2021, 03:47:34 am
content: "the best part is no part"Elon Musk