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I have an Ender 3 V2 pro with the Quinly bed adhered to the aluminium bed.

I have a hard time getting my prints to stick well. (PLA as well as PETG). We finally found out that only increasing the bed temperature a lot helps a little. Only the edges have a very bad adhesion and even terrible warp.

Here are measurements from an infrared thermometer:

temp in °C in different measurements

I kept the orientation and distance constant.

  1. Is it normal that the temperature has such differences across the bed?

  2. If not: What could be the cause?

  3. And: How can this be solved?

Hacky
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    Are these 8 measurement sessions of the bed (of a single heating event), in different resolutions (9, 16 and 25 points) or separate heating cycles? A temperature of 86 °C is pretty high for PLA or PETG, if it doesn't adhere, you may need an adhesive or place the nozzle closer to the bed. Is the bed insulated at the bottom? – 0scar Feb 13 '23 at 15:03
  • I started off at 60°C, but as big prints tend to warp I tried increasing the temp and ended up here. The temperature we use for PLA (60°C) also shows the same signs of uneven distribution. Also, my bed is the Quinly VAARP, they recommend 65-85°C for PETG. The measurements are at different days and different cycles. The Ender3 v2 has no insulation at the bottom. – Hacky Feb 14 '23 at 09:36

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