Blake215

I just printed a part with PLA at 210 C and I started the fans at .5mm just to see what would happen with the temperature, and there were no problems. The block cooled down 2 degrees for a couple seconds and then immediately warmed back up. I'm not sure if printing at higher temperatures will have a different result, but right now I had no under extrusion or grinding with the extruder.

Yeah, I used two 40mm fans like they have on the Ultimaker 2's now. My UMO+ in the beginning had just one 50mm fan on it, but I removed that completely and replaced it with two 40mm fans one on each side. I'm not sure how the non + are set up.

I figured exposing the aluminum block was going to be a problem I was hoping that I would be able to think of a way to design an air block to protect the alu block. Heres the link for the fans I bought. http://www.amazon.com/0-1A-40mm-Connector-Computer-Brushless/dp/B00E1JO8SG/ref=sr_1_2?s=pc&ie=UTF8&qid=1456363056&sr=1-2&keywords=DC+12V+0.1A+40mm+x+40mm+2+Pin+Connector+PC+CPU+Computer+Case+Brushless+DC+Fan

Hey guys, sorry I haven't replied in a while but I've been working on a solution and I found one. I printed these brackets http://www.thingiverse.com/thing:271684 and they work pretty well. To go on it I bought two DC 12V 0.1A 40mm x 40mm 2 Pin Connector PC CPU Computer Case Brushless DC Fan from Amazon and then I cut off the old fan and wired the new ones in series. It really was not that hard to do once I found all of the supplies. One problem that I do see though is insufficient air flow. I haven't printed anything with them yet, but we'll see how well they work.

If I decide on the two 12V fans is there any possibility that the current will be too high. I calculated it and I figured that the current will be right at 200mA.

I was wondering if anyone knew of a way that I could upgrade my UMO+ to have a dual fan configuration. When I print objects with overhangs the side with the fan on it prints perfectly fine. However, the opposite side prints overhangs pretty bad. I was wondering if upgrading to this would be possible or if there is a solution that does not require me to upgrade to a dual fan configuration. [/media][/media]

That would probably be the best long term solution. That will be the next upgrade that I add to my UMO+. Thank you for the help.

Thank you, I did what you said and it really helped. After tensioning those belts I followed the instructions on this link, http://blog.mcmelectronics.com/post/3D-printer-calibration#.VoMYr4RlngG ,to calibrate my X and Y axis and I now have perfect circles.

I have an UMO+ and it will not print a good circle on the factory settings. Therefore, I tried the nickel calibration test on thingiverse, to calibrate my X and Y axis, I have done it over 11 times, and have followed the instructions to change the steps/mm. However, nothing I have done has fixed this problem solar, and it is very difficult to make accurate prints if my printer cannot make a circle. If anyone can help please let me know what I need to do. In these photos the rectangle at the top is supposed to be square and the oval thing direct under it is supposed to be a circle.

I was wondering if anyone knew of a dual extruder upgrade for the Ultimaker Original Plus. I cannot find one. Ultimaker has one, but it says it's only for the Ultimaker Original not the Plus. I can see on my printer that it is set up to where it can be upgraded into the dual extruders. However, I cannot find a kit. Or even all of the pieces to piece it together. If anyone knows of one or where I can get the pieces that would be very helpful.

I posted some pictures. Hopefully they help you understand what's going on.

[/media][/media] here are some pictures. They are not great quality but I hope it will help.

I have an ultimaker original plus, and it has been printing fine. Other than when it is things where it has to cross an open space to reach the area of the part that it needs to print. It ends up leaving filament along the edge and it builds up as the print progresses. I have looked up solutions such as increasing the retraction speed incrementally and stopping at 60 m/s, increasing the distance it retracts incrementally until 5.5mm, lowering the flow rate of filament to 85% incrementally, and lowering the normal printing temperature of PLA from 210 to 205. . If anyone can help that would be much appreciated because I am a beginner at 3Dorinting. Only about 3 days now.