Technical materials on UM2

[DerekRyden 1]

I have just purchased a ruby nozzle and a roll of "X Strand" (glass reinforced nylon) to print on my UM2 (which has the Olsson block but still the original filament drive mech). After having problems and contacting 3DGBIRE tech support, I'm told that this material will not print on the UM2 (so £180 down the drain).

 

Has anybody else tried this (or a similar) combination and got it to work somehow? I am considering upgrading the drive mech anyway, but was told that this wouldn't make any difference.

[geert_2 557]

No experience with this. But a thought: you also need to consider the maximum temp that the printer can deliver (I think 260°C for the UM2?), and the temp required for your material. Some engineering materials need way hotter. I don't know yours.

 

If you already have the hardened nozzle installed, remove the bowden tube, heat up the nozzle, and try to feed some filament directly into the nozzle from above. Just to see if you can melt and extrude it.

 

[DerekRyden 1]

Thanks geert-2. I think you're right, that temperature is the main issue. The filament states 220 - 280, and I had it set at 250, i.e.10 degrees below the max. I don't think the filament was fluid enough at that temp, so the drive mechanism slipped and damaged the filament. Just getting the stuck filament out of the hot end has involved dismantling it completely, and I still haven't cleared the hole in the actual nozzle. What I learned from tech support, is that, even if I got it working, the feed mech won't cope in the long term. So I'm abandoning the idea. I actually have an order in for a CEL Robox Dual, which, if it works OK, has an option for a head (including feed) which works with technical materials.

 

Anyone want to buy a roll of 2.85 X-Strand in original packaging with extra desiccant added, and/or a blocked 0.4mm Ruby Olsson nozzle??!