chrisr

Did the piece of bowden tube resist the heat ok?

Put me down for two as well please :-)

Lol! :-)

The special cloth you can buy which is for cleaning spectacles and camera lenses is excellent for removing any traces of grease from the glass. It literally makes the glass "squeaky clean" = good for adhesion :-)

I bought it ;-) picking it up this Saturday.

That little baby printer is pretty cute! :-)

Uploaded stl files: https://www.youmagine.com/designs/um2-feeder

der_s, I was also interested in this but never received a reply from OP to my PM (and email) sent 18th December which remain unread. So I gave up and since then have bought another UM2. I hope you have better luck getting in contact with him than I did. @ OP If it's no longer for sale perhaps you could update your post? ;-)

Gloucester, could you pm me?

Hi Dan, I may be interested in your UM2, although sheffield may be a bit far for me though...

If you want to go third party, then as a first call, I'd suggest you email/phone UM for the spec of the tube they supply? Or... just measure the tube dimensions for yourself and then check with the seller that what they're offerring is equivalent? Personally I'd just bulk up my order from the shop to make the shipping worthwhile... as there's going to be other parts you'll probably need in the future.... teflon couplers... for instance.

.. and not WD40

But it will work, yes? Or if applicable...re-think the construction of your part and split it so that where you need holes tapped just those parts are printed solid? When I bought my isolation miller to make my own pcbs (LPKF Protomat C60) I had to think through my layouts with a view to the process of the machine in mind. Alongside my UM2 that's my other very favourite machine ;-)

Best contact the seller and ask them directly - once you've measured the relevant dimensions of the tube you're replacing :-)

The shop sells them: https://shop.ultimaker.com/product/39/Bowdentube

Going from 14.09 to 14.12.1 kept my profiles intact and I've just given them more meaningful names than Custom1,2 etc., . such a useful feature! :-D

I think my version may be 14.09.... ? I'll have to check... but I very much like the saving settings to SD card so I definitely will be upgrading

Oh! Now that is a very nice feature. Thanks for letting me know :-)

Quick question - if I upgrade my firmware will I loose my custom material settings ?

Thanks gixxer :smile: I've used it for roughly one spool (750g) of PLA filament with absolutely no problems so far - see the cylinder torture test picture - 10mm 3 /sec, run just now. My design has quick release functionality - that's one of the things I liked about Roberts feeder and wanted to incorporate that feature in my version. The spring "latch" swivels up. Just grab hold of it and pull it up to release. It pivots on a metal ball end swivel which is attached directly to one of four studs which hold my stepper in place - so you can remove the feeder without having to worry about the stepper falling. This also has the advantage that the force goes directly through to a metal stud rather than through any PLA body bits. To quick release, pull the pivoting spring latch up, and the pressure arm is then free to fall away. Very easy and quick I think! What I didn't like about Roberts feeder was the "slop" in the arm hinge, the "slop" in the sliding pressure arm, which all tended to make the filament wander against the hobbed gear, the distance between the feed point (to the hobbed gear) the distance to the bowden entry point and worse of all, the crucial (imho) filament entry point which is PLA on PLA contact. I don't like any filament on PLA contact - as that (imho) is a recipe for friction and wear. Plastic on plastic just isn't good and = friction! On my version, the filament comes in through a 4mm metal eyelet, which is as close as I could get it to the drive wheel so as to prevent any "wandering" of the filament. The pressure arm is fixed, again to prevent any wandering. The output of the feeder goes straight into the bowden as I could make it. The filament just see's "metal, metal, bowden" in its travel through my feeder with as small as spaces in between as I could make them. I imagine my feeder should work ok with flexible filament - but as I've never tried any, I can't say for sure... but I think all the criteria are there for it to work? 10 mm 3 /sec torture test. Printed just now. Edit: For extra rigidity the top of the pressure arm is contoured to the ball end arm when closed, so everythings nice and snug and tight :smile: Quick release

I started off with Roberts excellent feeder but there were a couple of things I didn't like about it, so I ended up making my own version based on Roberts design :smile: Edit: Reasons why, as I was asked :-) http://umforum.ultimaker.com/index.php?/topic/4393-ultimaker2-feeder-system-improvements-and-ideas/?p=84136

My improved feeder based on iRobertls design. 4mm metal eyelet reduces friction. Pressure arm is fixed to reduce side to side play, bowden tube as close to feed out as possible. Works a treat! :smile:

I'm guessing these won't be the latest glass reinforced fiber versions... but for the price and free shipping they offset that by becoming an affordable disposable part... good find!

Hi Didier, Wow, that's just such a confusing way of handling things.... Thanks for the clarification.

+1 as otherwise how do we know you have them and are acting on them.... ?