Hotend temp fluctuations

1

Not sure which category this should go under so i figured general works for now. Please let me know if it needs to be moved.

So how much of a temperature swing do you find “normal”?

I did a bunch of PID tunes a month ago and took an average from that. But just started a temp tower and due to previous bad luck with my own temp towers, i decided to watch it more closley this time.

I noticed for a set temp of 220°C i was having a temp swing from 217°C to 222°C. Would this be a decent range for an insulated hotend? Or should i start looking into a backup heater cartridge/thermister and do another round of PID tunes?

Thanks :slight_smile:

2

My V6 with a silicone boot is +/- 0.9C max right now. PID is such a rabbit-hole…
20210207_161612

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3

It’s normal to get a swing initially when the nozzle gets up to temp, once it settles you shouldn’t be seeing a huge variance ± 1 degree but the amount of filament you push through will also cause the nozzle too swing in temp as well.

4

Staying on temp is the one thing my e3d v6 and Mk8 do very well. A spot of heat paste every 3 months on all hot end component parts (disassembly/reassembly) is my routine now.

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