RE: Need some help to fine tune for small partsĪ dirty PEI print surface. Search for " 3D printer first layer problem Calibration process" on youtube, movie on first layer calibration, with a good zoom in. Use 7x7 calibration for first layer, see settings in the printer. If you see white spots like a bubble on the bed, then filament is releasing from bed.Īlso no gabs between lines should be visible. If Bubbling during extrusion then it has to much water inside.Ĭheck after the first layer is ready, then you see if it sticking enough, and not releasing and sticking to the nozzle. It should be thick enough(if not, nozzle possible blocked, or partial blocked), (do a cold pull), Move extruder to the top and extrude filament, it should go straight down(if not, nozzle possible blocked), Most problems are first layer to get this 100%, and bed not clean.īad filament is possible, or filament with water inside. To get it stick very good, a 100% first layer is very important, see youtube for movie on this.Įvery new print watch the first layer, and look if it is 100%, this will also prevent a big ball of filament on your nozzle wen model let loose during printing. Petg sticks to much on the pei sheet, use window cleaner, this leaves a layer on the bed, so it does not stick to much.ģ. Use one that makes a thin layer), and big flat models and small footprint, use a big brim attach to model so footprint is bigger. A few prints you can use alcohol, then again dish soap,īig flat models and models with small footprint on sheet- use glue stick(and not every glue stick is the same, A clean sheet, use dish soap, then you can print on it. 3d print will never be like start and i have the print, there will always be problems!!!!!!Ģ. This how I work on a pei sheet(there are always exceptions):ġ. Is still possible settings need to be more preciese. PLA sticks more difficult on a powder coated sheet. Make a good first layer picture si we can see if it is OK.Ī new sheet will stick less then a used one. In settings of printer use 7x7 calibration. Adjust, test, check if all is OK over the whole bed. Search for a good first layer print test model, with a few squares spread over the build plate. First layer should be 100%, is also because of better sticking to the bed, and smooth under lower layer, and if to high you will have to much filament higher up in the print. Clean bed, this so parts do not get loose from bed, the parts will stick the best.Ģ. There should be 0 holes in the first layer, in your first pictures there are holes.ġ. In this pic you can see on the base plate that the larger surface is fine, but the smaller areas are inconsistent and pretty messy. 0.2mm I think, and Z is at -0.950mm for this one. This is the base.Īnd this is the (unfinished) top of the same partĪnd finally, here is the issue with the top layer. These larger parts were part of the same print job. Printed at 0.2mm QUALITY and Z of -1.00mm This is the base one of those small pieces I mentioned that loses adhesion. I'm wondering if the over extrusion problem is adding to the lack of adhesion problem because the scaggy endpoints get caught and dragged so if it's a small piece with iffy adhesion then it just lets go? I should add, I'm using the smooth PEI plate which has been washed with soapy water and is cleaned with IPA before every print using a microfibre cloth. I also have an issue that (to me) seems like a little a bit of over extrusion which affects small sections of top layer. My problem now is that very small areas of base layer tend to curl up a bit which makes them easy to dislodge. I was reasonably happy with my first print although I knew I still had work to do. Need some help to fine tune for small parts
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