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Hi all,

Wondering if anyone can give me some tips. Ive been getting great prints recently however upon loading a fresh roll of filament ive been having problems with my dup 4s.

Same filament manufacturer, same settings but was getting over extrusion (raised parts mid print with a blob of plastic making the hot end rise over it). Checked diameter and modified print file for 1.83mm and seems to be better but now the pla is rising off the bed in multiple corners and i dont know why.

Same temps as before when it was printing great, 195/40c bed printing on painters tape. bed is as level as i normally get it also? Any ideas?

I have noticed recently my reported hotend temp in sailfish jumps around abit and doesnt seem as steady as it use to be, e.g reporting 185c when 195 was the target, or going higher for short periods randomly.

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different values for temp and over or under extrusion depend on manufacturer and specific materials (values can be different for different colors even with same manufacturer and material type).
when pla doesn’t stick to bed it usually is matter of bed levelling, this might be different for this material too

BTW pla should stick to painters tape with no extra heating with a good levelled bed (this depends on painters tape type and quality too, of course)

for the hotend issue, this might be due to damaged or worn heating couple (but I’m not sure)

get the bed a little closer to the hotend or change the tape (blue painters tape by 3m is one of the best, not the best actually)

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Hi,

Thanks for the reply. The PLA I’m using is exactly the same, same type, same colour, same manufacturer although this roll seems slightly thicker.

I am using 3m tape also, and the bed is as level as I always get it that’s why this issue is strange. I’ll try the bed levelling again and maybe try on my other hot end to see if there is a difference.

Do you think it’s possible a heated bed with PLA can cause problems?

thanks

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no, a heated bed can help with pla too, but unless it’s really needed (some rolls can be “hybrid” PLA, meaning it’s not pure 100% pla even if the manufacturer says so) it’s a waste of energy to me

maybe the new roll comes from a different stock or supplier or distributor. I’ve learnt that sadly every roll can be “unique”

maybe a lower speed or/and a higher temp for the first layer can help a bit

1 Like
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Thanks, I did exactly that,lower speed and higher temp and its working fine now.

I guess every roll can be unique which is a bit of pain.