Hot answers tagged

11

I am curious, what is the purpose of printing a single-height outline around the objects to be printed? The (equidistant) lines at distance from the print object is called the "skirt", the skirt is an option found under the "Build Plate Adhesion" options in your slicer. The primary function of the skirt is to get the flow going, but there are more benefits ...


5

I use kapton tape to fixate the glass plates to the heated beds on two of my printers, one a Prusa i3 clone, the other a CoreXY. The tape is able to withstand higher temperatures, and is very thin, so it doesn't have the drawbacks of limiting the print area or high chance the nozzle hitting the clips.


5

your print surface is destroyed So, you managed to rip off your print surface in the center. Happened to me too. the corners of my scraper were too sharp, cutting the surface. Another time I did pierce the surface with my nozzle. Damage happens. Replacement surfaces for the Ender3 start at about 5 bucks a piece. So get yourself some spares. Clean your bed ...


4

My understand is that's is basically a purging extrusion, so that you get flow through the extruder before you start printing the object, as filament that's been inside the hotend during warm-up might have been "overcooked" by spending too much time in the hotend at temperature. It also helps stabilise the PID loop controlling the extruder temperature by ...


4

If the V roller wheels aren't tight on the Y axis beam, it means the eccentric nuts are not adjusted correctly. Two of the rollers are mounted centered on the holes in the carriage frame, but the other two are on eccentric nuts which displace them from center slightly depending on the orientation the nut is turned to, to allow tightening and loosening of the ...


3

I'm not sure what "the build plate keeps slipping while printing. I tried to use binder clips to keep the plate in place" means, but if you have a build surface and a bottom heated bed, you can look for "silicone thermal pad 0.5mm". You can put it between build surface and lower bed, so that it will increase friction and there won't be ...


3

The build surface on the Ender3 is a BuildTak clone. The picture is a bit unclear, but given my experience with BuildTak (clones) this certainly damage because of heat. You can, as suggested before, replace the bed surface, but I do not think it is necessary at this stage. Normally these surfaces do not get damaged that easily but to prolong the life try ...


3

Ethanol (Ethyl Alcohol) should work just fine as long as it's around 80% or more. It's very similar to isopropanol as a cleaning solvent. What you're basically doing is removing any stray grease from the bed with a solvent that evaporates quickly. Methanol would also probably work. It's very poisonous though, and shouldn't come into contact with your skin, ...


3

Unfortunately, you may have to destroy this part, or the build surface, just to get it off the plate. It looks really on there, and if you can't get under it even with a razor that further supports my gut instinct. It's happened to me before, just part of learning how to print with a particular material on a particular printer and build surface. One thing ...


3

If you look at the multiple lines of the skirt, you see that none of the printed lines are touching the other laid down lines. This is an indication for under extrusion or a too large of a gap between the nozzle and the bed (or both). Considering you are talking about a bead/drop/blob of hot filament not adhering to the bed, this might be a good indication ...


2

I've printed for several years direct onto the 3 mm heated bed of the Anet A8 I used; worked perfectly! I did use a specific 3D print spray for adhesion, see e.g. this answer on "Should you use hairspray on a metal bed 3D printer?".


2

It's because the bed heats up. Since the bed can heat up to the point that locktite or nylon can soften, using those products to keep the screws from turning will have exactly the opposite effect.


2

Build Plate If your clips aren't holding down your build plate, make sure your nozzle isn't crashing into the plate and moving it. A build surface between the clip and surface or adhesive might help keep the clip from slipping on the top surface. A rubbery gasket material that can withstand you heated bed temperatures, such as the silicon FarO mentions, ...


2

You can try putting it in the oven at 100 °C and then peeling it off. At that temperature it's soft as cheese.


2

Print a filled square 2 layers thick over the whole surface of the bed and then peel off when it's still warm, so that it may take away also the previous deposits.


2

Once a time, it was the same with me, I sanded the surface well and continued for a while without any problems. The only problem was the sand pattern that was always visible in the bottom of models and finally I upgraded the bed to PEI sheet.


2

If you have tried every trick to remove the print, you probably need to replace the build surface. If the PLA is "engraved" into the build surface, your surface is damaged anyways, just replace the surface, or remove the top surface and buy a sheet of glass, preferably borosilicate.


2

I would try a single edge razor blade at a low angle used as a scraper. If you can't feel the blade catching in the residue, it probably isn't an issue. If you must get rid of it you don't have good choices of solvents. Maybe you can burn it off by placing the class in an oven through a clean cycle. With luck the hearing and cooling won't break the glass....


2

Following Nathan's answer, I've solved my problem with Nathan's suggestions and the method in this video. What I did? Flashed Creality's original BLTouch firmware to printer Heated up bed to 60 °C Leveled bed the old fashion way first, but with slight resistance (you don't have to level perfectly) Followed the youtube method to find proper Z offset Opened ...


2

A bend in the frame extrusion won't affect the bed this way on an Ender 3 -- the bed rides on a carriage with (IIRC) four V-groove wheels, similar to the Z and X axis carriages. If your bed is the same front and back, but that's higher (relative to the nozzle) than the middle, it's because the bed itself has a curve. This is more common (in my experience) ...


1

I would suggest you read this, even tho it's a different mainboard it may help. Next to that you should level the bed the old fashion way first with a paper on the 4 outer corners, it is essential that you do this because ABL can only compensate so much when printing. After that set the Z-offset using a paper and run some bed adhesion test prints and use ...


1

Heat the bed to around 90 °C and then scrape everything off with a metallic scraper, like the ones used to fill gaps in walls. No need of a super sharp one, since the plastic will be very soft a that temperature. If you have a razor blade and a proper handle to avoid cutting yourself, you won't need to heat the bed to more than 40 °C, since you dont want the ...


1

I was wondering if it had something to do with my Z axis and BLTouch. When I unplugged the Z Axis on the printer the extruder wouldn't lower only raise so I plugged it back in and it moves in the right directions. The mother board I'm using is a SKR E3 Mini V2 and the BLTouch is 3.1 On that version motherboard the BLTouch plug has all 5 wires combined in one ...


1

Does your bed already have washers on the screws? The neopreme (red) washer under the screw head (in picture). This is the German Reprap X400 design and is worth trying.


1

In CuraEngine's FffGcodeWriter::finalize method, G-code to zero the bed and enclosure temperature is only written if the machine profile defines a heated bed/enclosure, so you could in theory avoid the cooldown by telling Cura your machine doesn't and putting the heatup commands in your custom start gcode instead of letting Cura emit them itself. However it ...


1

Try to lift the nozzle more than you'd do even for PLA. PETG sticks really well to the heated bed. If your bed is already well leveled you can adjust the nozzle position in Z by using Z offsets directly in your slicing software (AFAIK, Cura needs an extra plugin for it, Prusa Slicer has it built-in). If you have done everything correctly, the PETG model ...


1

Playing around with the nozzle height will help: back it off until just before you have first layer adhesion issues. Don't jam the filament into the bed as you might for ABS. This helps with small prints. However, my experience has been that if you have a large enough continuous contact area (i.e. more than a few square inches) with the print bed, there ...


1

Correctly level your bed. Seriously, that's the answer. PETG does stick well, but it only gets difficult to remove if you're smashing the first layer against the bed with a nozzle that's way too close. With the bed leveled properly - using feeler gauges or test prints and a sub-0.1-mm-precision caliper - I have no trouble taking PETG prints off a buildtak-...


1

The material used for the Build surface is not PEI but a BuildTak Clone that offers adhesion through a rough surface texture. I do not know what exactly is in the composition of the polymer, but I can say that my bed surface needed replacement about 9 months after purchase after I vigorously removed a piece I printed. As a matter of fact, most build surfaces ...


1

The Prusa manual also states that you can use Windex for PET-G: use Windex instead as it degreases less thoroughly. Also works with PLA, I've tested it, but for assured adherence, I also use a little swipe of the glue stick included with the printer.


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