- ZRHERBERTParticipantAugust 25, 2016 at 11:25 amPost count: 9
I am trying to print off the XY and XYZ parts with a modified printrbot(X axis has been upgraded). I have the build plated as level as I could manage and printed a few test pieces before I left the XY to print on it’s own. I came home form work to find the mess printed below. I watched the print a second time and noticed the edges curl and eventually pop off the build plate.
Anyone else have issues of have any suggestions for getting this to print? (I will try to upload specifics of my repetier config when I get home.)
This is the first part I have had any issue printing. only 4 parts left to go!
Attachments:vicious1KeymasterAugust 25, 2016 at 11:30 amPost count: 2627
It is usually a temperature thing. Do a few calibration pieces from thingiverse to get your extruder temp right, make sure your print fan is working.
Or make sure you are sticking to the bed well enough. I print with 45 degree bed on 3m blue tape that has been wiped with alcohol.JasonParticipantAugust 25, 2016 at 11:55 amPost count: 320
Glue stick is my best friend when adhesion is begin difficult. I never use tape anymore.Matt saegerParticipantAugust 25, 2016 at 5:10 pmPost count: 108
Try Aquanet and or get closer to the bed. Do you have a heated build plate?ZRHERBERTParticipantAugust 26, 2016 at 3:28 amPost count: 9
Thanks for the tips, no heated bed yet and I have tried hairspray before but never had any good results. I’ll pick up a glue stick and give that a try.
(I am also going to check how level the bed is again)
I am printing on green painters tape (frog tape) and had good results so far.
I think I just need to adjust the temp. as I watched a raft bubble and warp last night.JasonParticipantAugust 26, 2016 at 5:11 amPost count: 320
What is your print bed made of?
One thing you could try is lay down your glue stick then heat the bed material with a blow dryer. After the first layer the heat bed isnt that critical with PLA. But in my experience the glue stick alone should solve your issues. Cleans up nicely with water. The attached picture is the brand I have found to work the best. I have tried several different ones. Some did not even work at all.
Attachments:Sergey KovalyovParticipantAugust 31, 2016 at 10:00 amPost count: 5
In my experience it is not enough to use the gluestick, heatbed is really needed for such a large part. I just printed the XY part using Raptor PLA from MakerGeeks, on a glass covered with gluestick at 60C.
So while the bed was still hot after printing, I could not get the part from it. But when the bed cooled to the room temperature, the part separated on its own and I picked it up with zero force. This means that if the bed was cold, it would have probably popped off mid-print.
Now, PETG and such are another story. I printed T-glase and had to soak the glass bed in water to dissolve the glue and separate the printed part. Without water I broke off pieces of glass.ualdayanParticipantSeptember 7, 2016 at 5:34 amPost count: 61
Blue painters tape is like ‘easy mode’ for PLA, in particular Scotch Blue seemed to work the best out of the brands I had on hand back when I was doing PLA a lot.
It also protects your glass bed, I have had ABS stick so tight to just a clean glass bed (alcohol cleaned like vicious1) that it ripped out chunks of glass and cracked the whole thing. There is one part on my MPCNC now with borosilicate glass merged with it. PETG has done the same thing to a lot of people. With blue tape on there it just pulls up on the tape instead of breaking glass when things stick too good.James DonnellyParticipantSeptember 12, 2016 at 1:05 amPost count: 48
I don’t know if the OP solved this, but I had some issues where parts with a wide base were lifting off the bed every time.
I noticed on my raft looking closely that the evenness of the bead was not perfect, resulting in less than 100% contact with the bed. I dropped the steps per mm for the extruder by about 1%, and the line smoothed out.
I also re-levelled with a dial indicator and squished the initial layer by a further 0.1mm.
Things seem to be sticking better for now. I’m using blue tape.ZRHERBERTParticipantSeptember 14, 2016 at 7:26 amPost count: 9
The aluminum plate of the Printrbot seems to be cold in my basement shop. A little shimming and taping a layer as it goes I got it to print. I’ll have to look into investing into a heated bed for the future. I’m going to try using a hairdryer if I have any more issues.
Thanks to everyone for your comments.
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