I’m a beginner 3D printing novice. I have done about 5-6 successful prints so far, and my last two have technically come out fine, but they seem very brittle. By brittle, i mean that both prints have snapped cleanly into several pieces, not by design. My extremely novice research has led me to think it’s a layer adhesion issue - it is very cold here where I am right now, and I print in a non-climate controlled shed because of reasons. I do have an enclosure though, so i tried printing my PLA at 205 instead of 200, but same result. Is there a better way to correct prints snapping apart like that? I don’t feel like i used any excessive force.
Ender 3 Pro Polymaker dual matte white/black PLA 1.75mm
Try leaving the hot end at ambient, turning on the heat bed to it’s printing temperature. Give it a while for everything to come up inside. considering room temp is around 20-22c or 68-73 F, it’s not quite as bad as i feared, but it could be better.
The heat bed should be able to warm it up a bit, but that is a very sharp differential, and drafts will cause problems. One thing to maybe try, is printing a tall brim. (basically a single-wall perimeter close to the part. They’re not as useful if you have an enclosure, but they can help shield a draft and keep some of the heat in from the bed better.)
Clogging could have happened if you’re trying to print too low in temperature, which, given the layer problems, that also looks likely. there’s a few variations, but you can try a cold pull to clear the nozzle (especially if it’s only partially clogged.)
My apologies, that room temperature is around 25° f, which is -4c. It’s very cold.
I just performed a cold pull, seemed to go okay, it was my first one. I feel like the majority of my problems here is simply trying to print when it’s so damn cold outside lol
Edit: The cold pull definitely seemed to completely solve my first layer issues, great suggestion. I threw a blanket over the next print, we’ll see if that helps
yeah. so, what’s your enclosure like? is it fully enclosed? one of those tent-thingies?
I’d suggest considering some type of insulation. Blankets work- if it’s MDF or mealmine or plywood, stappling them inside. If… insulation is problem… Blankets over a big-enough cardboard box work (just be aware of melting/fire risks. Cotton>synthetics. card board is okay. my old I3 prusa had cardboard under the heat bed instead of cork or neoprene for a long time. Try to keep it small enough to just fit everything inside. (cut the top flaps off and put it over upside down.)
The heat bed should be good enough to get it most the way there- and if you find it takes too long to heat up the inside… a heat gun can prime things nicely.
Yep, it’s the official creality enclosure. I threw a quilt over it, so here goes
Crossing my fingers for yah.
Ok, so the print came out great. Unfortunately, it was a print without top and bottom layers and honeycomb infill of only about 12%, and I accidentally squished it getting it off that extremely cold bed this morning lol. To the immediate problem I posted above though, I think it was definitely a clogged nozzle which you helped fix, and the layer adhesion is probably due to enclosure temperature being too low when I start the print. I will correct both of those things, and then go watch YouTube on how to remove a print from a cold bed haha
So, one of the tricks for really stuck on prints, at least for glass beds, is to put it in the freezer and then hold the build plate vertically and tap it on something hard. (Firm, but not so hard it breaks or anything.) my experience in the past is, with some exceptions… it goes in the freezer and pops right off. if bed adhesion is too good, you can try adjusting zoffset to print a little higher.
you can speed warming up the enclosure with a hairdryer or heat gun.
-4c is extreemly cold, get thermometer inside of enclosure and leave your heatbed on until it reaches 10-15C before you start printing. Even better get enclosure heater. Id also bump nozzle temp to the highest marked on your spool.