kerry

What should the 'Gcode flavor' setting be set to in Cura for a Ultimaker 2+ with this firmware? Thanks

Count me as another who had a great experience with Dynamism. The person on the phone was very helpful, they had them in stock when no one else did, and it arrived quickly and in perfect order.

Yes, I read it. And went out and bought an inexpensive rotary tumbler. Thanks for the advice, it has been working great.

In Cura->Tools there is the option to either print all at once or print one at a time. For the scenario you mentioned above you want to print all at once. That will give the extra time per layer for cooling.

I printed out the Isis bird statue from Hyde Park mentioned in a previous thread. I used bronzefill. The neck is slender, and I broke it trying to polish/sand it. Bronzefill isn't cheap, and I'd hate to go with a high infill in areas of that print that don't need it. Is there a way to just increase infill at certain Z ranges? I have a UM2 and have been using Cura.

What is your shell and bottom/top thickness set to?

I wondered the same thing. 260C seem very high considering what is recommended. I'd also worry about the bronzefill conducting so much heat to the teflon.

Fantastic. Thanks Dim3snioneer!

I just received a roll of bronzefill, and I'm really enjoying working with it. I'd like to print the bird statue shown here http://www.imakr.com/us/filament/31-colorfabb-bronzefill-175mm.html but I haven't been able to find it. Does anyone know if this is available somewhere?

Reply sent. Thanks illuminarti.

Looking at those photos it looks like the only consistently good walls I'm getting are at 3mm. I watched it print that piece for a bit, and noticed the grinding/skip sound from the feeder about once per revolution once it was above 3mm. It was a short sound, but pretty consistent per layer. It feels like there is some fundamental design issue with the UM2. My old Thing-O-Matic was a bit long in the tooth after 2 1/2 years, but I never had any issues with extrusion, even at fairly high acceleration rates.

Thanks illuminarti, sorry I've been busy and haven't had much time. I increased the tension as suggested, it is now right in the middle of the range (I have a UM2 purchased in May). I have already installed a version of your firmware that had the filament grinding fix in an earlier build. Here are some not so great photos of the extrusion test piece.

Yes, the PLA I'm using is silver, and has some transparency to it so I need to set shell width to 1.2mm (a multiple of .4) to get it to look solid. Otherwise I can see the infill pattern. I have not tried the test piece yet. Once I get it back to functioning I will give it a go. I've read some postings about Robert's extruder. Is that a known 'fix' for folks? Are they still seeing extrusion issues after installing it?

The fan is always running when it is on. At least I hear it. I'm not at home to reproduce it, but I think the filament is getting chewed up. One thing that may be aggravating it is the layer height. I was printing most things at .1, but for these larger builds I went to 0.2mm layers otherwise they take forever and the resolution increase isn't needed for this type of part. I upped the temps from 210 - 220 for the 0.2mm layers, but it hasn't seemed to fix it (although it may have helped). What is the standard temps for 0.2mm layers?

Sorry if this comes off a bit harsh, as I've been frustrated quite a bit at the hit or miss prints I've been getting on my UM2. I received it last month, and have had some fantastic prints off of it. But I've also had extrusion issues that require me to go through various steps to get it working again. For the past couple of days I've been printing 3-5 part batches at .2mm, 50mm speed, PLA, 20% infill, 210 deg (also 220) for a project I'm working on. I set them up to print at night as they are usually 5-7 hour prints. The first night went flawlessly. The second night, same plastic, temps etc., printed fine until the last 10% then terrible extrusion and ruined prints. Pulled PLA, re-insterted, put fine metal wire in nozzle to clear it, reprint and things look great until ~ 2mm in then extrusion issues again. Repeat cycle of fixes, set up a print for overnight and in the morning that batch looks great. Next print, ruined due to extrusion. I don't think I need to show photos, as there are many already on this forum that look exactly like what I'm getting. Can someone from UM tell me what the current plan is to fix the design? And what the status of that fix is? Thanks. Kerry