I built a heated chamber for my MK4 and the layer shift is awful - How do I print this? (Printing help)

RE: I built a heated chamber for my MK4 and the layer shift is awful

Artur5 — Wed, 31 Dec 2025 22:14:55 +0000

I strongly advice against heating the chamber above 50C. This printer, and most others of similar range, aren’t designed to work reliably within these range of temperatures inside the chamber. Neither the steppers, nor the electronics (and of course printed parts on PETG ) will survive in the longtime at an ambient temperature of 60C. You want industrial printers for that kind of jobs. No plastic printed parts, glass instead of acrylic panels, military grade electronics, very efficient cooling and so on..

RE: I built a heated chamber for my MK4 and the layer shift is awful

Paweł Wojewoda — Wed, 31 Dec 2025 12:28:02 +0000

I just build solution: https://makerworld.com/en/models/2167382-chamber-heater-with-smooth-power-control-pid#profileId-2350250

RE: I built a heated chamber for my MK4 and the layer shift is awful

ZM — Mon, 20 Jan 2025 04:00:08 +0000

Hi Brian,

Thanks for the reply. I just printed the same part with PETG(lower temperature) and deactivated the chamber heater while printing. The part looks noticibly better. So I'm guessing the heater somwhow caused the inconsistancies. I have not inspect the XYZ axis plastic parts for deformation yet but upgrading them to PCCF is a good idea.

Thanks

RE: I built a heated chamber for my MK4 and the layer shift is awful

Brian — Mon, 20 Jan 2025 03:15:26 +0000

If you got the chamber to 55C it's very well possible you have deformed parts on your printer. All of the plastic parts on your printer are PETG and at those temperatures will deform under load. I'd reprint all of the plastic parts with PCCF, at a minimum the idler door, latch, y axis belt tensioners and the print fan duct.

It's possible that the gantry parts for the z and x axis could have deformed as well, so if it were me I'd replace those too.

Good luck

I built a heated chamber for my MK4 and the layer shift is awful

ZM — Sun, 19 Jan 2025 21:41:20 +0000

Hi everyone,

I recently started to print RC planes with my MK4. I was using some Inland ASA and the default Prusa ASA setting. The result was okay when I printed the small components.

Then I start to print the wings with single wall and 3% gyroid infill. The warping is really bad it bent the PEI build plate(I used glue so the first layer sticks really well). After doing some research I decided to add a heater to my enclosure, see below:

I set various chamber temperatures, from 40C to 55C and the results were awful with a alot of random layer shifting.

I was not satisfied and did more research, found a couple potential causes and tried to resolve them:

1. Loosen or misaligned belt: I checked the X and Y belt tension with Prusa tuner and the tension is okay. Belts are staight.

2. Linear bearings and lead screws: I cleaned and re-lubricated them. They looked clean and straight.

3. Overheated stepper driver: I received an overheat warning when I set the chamber to 55C, later I lowered it to 40C. Additionally, I opened the XBuddy lid and put a cooling fan to blow air directly to the motherboard.

4. Poor ambient temperature control: The temp controller I bought is ON-OFF switch type, so I thought maybe the temperature fluctuation is huge, therefore I add another external powered fan to circulate the hot air in the chamber. The temperature stays pretty consistant.

After all the adjustment I did, it still gives me awful prints with a lot of layer shifting. So I came here looking for help. If anyone have suggestions please feel free to let me know.

Thanks!