cdrose

Video Here Hi, I recently bought a new Ultimaker PVA 350g spool so I know that it is in good condition and also cleaned my BB core by performing hot and cold pulls, so I believe my nozzle is clean. For some reason when ever I print with PVA it seems to run / drool / leak out of the nozzle after it has laid some down and also seems to curl up and ultimately stick to the rest of the model or the nozzle. Sometimes the PVA oozes out far enough to then collide with the print as the PLA layer is bring printed. I've taken some photos and video of one of my prints to hopefully explain more clearly. The pictures of the nozzle are at the end of the print. Is this printing correctly? There was also a tiny bit of grinding on the filament. Thanks in advanced!

Thanks for your response. I received my brand new Ulti PVA 350g spool and the difference is immediate. A brand new good condition PVA filament is bumpy / rough to the touch, is cloudy and snaps. The used PVA I have is smooth to touch, almost completely clear / see-through and bends easily without snapping. New PVA is on top New PVA is to the left

This the third object I've printed, the spiral vase! Very happy with it, all default settings, no support, UltiM white PLA, 200microns and no infill. 99% scale at 198mm, 6h 50min print time

Ah excellent that's great thanks gr5. I'm new to 3D printing so happy I'm on the right track. My first print of 3DBenchy was great and stuck well. I'm now printing a case for other print core.

Hi all, I'm brand new to 3D printing but have a lot of experience in 3D modelling and CAD design. Recently got my second hand (pre-owned) UM3 and extremely happy with it. I have had problems with the PVA bubbling, popping, burning and grinding which I've read means it's absorbed too much moisture. I think previous owner either didn't store it correctly or during transit it abosrbed moisture as it wasn't bagged up. I've now invested in plastic sealable bags and packets of desiccant, I have also ordered a new spool of PVA to see if I have the same issues. Fingers crossed! I have a few questions: How should PVA look? White/Yellow/Milky? How flexible should it be? How long does it take for PVA to absorb too much moisture? Does the average household room pose a risk to the PVA while using it to print with for long hours? How to identify / check any filament for quality / moisture absorbtion? Same questions for PLA too? I hope this isn't too many questions! Thanks, Chris

Hi all, Just wanted to see what you guys opinions are on my bed levelling. Does this look level to you? Thanks, Chris

Just by going by this image it looks like your upper model "yellow" does not have it's origin centred correctly. In other words the 0,0,0 of the yellow model isn't in the centre, ensure your model is zero'd out and centred in your modelling application first before exporting.