Printing temp versus adhension I've been printing a long time using same vendor ABS. Spec 220-260 degrees print temp. Using print temp 240 C. Having no problems. Now I tried out a new vendor ABS with spec 200-230 degrees C Clear transparent 3mm I get problem with adhension. First llike 30 layers look just fine. It's just that after 1 hour, of my total 2 hour print time, the object cut loose from heated bed ... ruined printout. Like at height 10 mm. Started using 230 degree C. 30-60 min printouts work ok. Adjusting Z zero height did not help A haven't experimented at all using different print out degree since before I had no problem What is your experience on print temp. Like what effect to observer at lowes limit or highest limet ? I print on plain glass heated bed 95 degrees C . Do you think I can fix my problem by adjustin print temp or bed temp ? Or is it just less good filament with this new vendor ? The attach is what it's supposed to be when NOT failing ;) Ha det gött Bosse https://reprap.org/forum/read.php?4,758004,758004#msg-758004 Thu, 05 Mar 2026 12:10:52 -0500 Phorum 5.2.23 https://reprap.org/forum/read.php?4,758004,762362#msg-762362 Re: Printing temp versus adhension https://reprap.org/forum/read.php?4,758004,762362#msg-762362
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Evan
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the_digital_dentist
I'm pretty sure it was the bed under the glass that was bent. I'll bet the bed has 4 leveling screws...

I had this structure once, really sucks. Broke my heated bed support. Now i have 3 leveling screws in a equally sided triangular structure and no problems. Also solved the problems that i had to level each print. These days i rarely level my bed.
Ok thanks, that's good info. Make sense with 3 level screws]]> sidhabo Reprappers Fri, 14 Apr 2017 14:30:23 -0400 https://reprap.org/forum/read.php?4,758004,762297#msg-762297 Re: Printing temp versus adhension https://reprap.org/forum/read.php?4,758004,762297#msg-762297
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the_digital_dentist
I'm pretty sure it was the bed under the glass that was bent. I'll bet the bed has 4 leveling screws...

I had this structure once, really sucks. Broke my heated bed support. Now i have 3 leveling screws in a equally sided triangular structure and no problems. Also solved the problems that i had to level each print. These days i rarely level my bed.]]> Evan Reprappers Fri, 14 Apr 2017 10:28:12 -0400 https://reprap.org/forum/read.php?4,758004,759898#msg-759898 Re: Printing temp versus adhension https://reprap.org/forum/read.php?4,758004,759898#msg-759898 Like the wall ended up 10 mm high, on warp side, instead of 12 .
So I had to continue trouble shoot. I will share some learning below ;)
Yes the heated bed were a little level off. So after adjusting I have even warping all way around and the object cut loose before print end.

Setting I did NOT change during trouble shoot.
print speed 50
bottom layer print speed 20
nozzle 0.4
layer height 0.3
flow 100%
fill density 100

This had small or no impact on the problem

change hot end temp 240 -> 225
reload firmware
adjusting Z zero height ( 0.5 mm steps )

This almost fix it but still some small ( acceptable ) warping

Put printer inside housing air temp inside got to 37 C
I made 5 cuts ( 5 mm ) in the wall even spaced around


Only total fix was

Using PLA instead of ABS

Still not sure why it was printing good before and not now. Only guess I have is I replaced the glass cover on heated bed.
May some small difference in heat spec or the surface .....

Ha det gött
Bosse]]> sidhabo Reprappers Sat, 01 Apr 2017 10:25:28 -0400 https://reprap.org/forum/read.php?4,758004,758461#msg-758461 Re: Printing temp versus adhension https://reprap.org/forum/read.php?4,758004,758461#msg-758461
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the_digital_dentist
I'm pretty sure it was the bed under the glass that was bent. I'll bet the bed has 4 leveling screws...
Yes, I agree. Have to recheck glass leveling again.]]> sidhabo Reprappers Sat, 25 Mar 2017 20:36:07 -0400 https://reprap.org/forum/read.php?4,758004,758457#msg-758457 Re: Printing temp versus adhension https://reprap.org/forum/read.php?4,758004,758457#msg-758457 the_digital_dentist Reprappers Sat, 25 Mar 2017 19:56:43 -0400 https://reprap.org/forum/read.php?4,758004,758434#msg-758434 Re: Printing temp versus adhension https://reprap.org/forum/read.php?4,758004,758434#msg-758434 My glass on heated bed cracked so I changed it.
To a totally exact same Prusa spare part.
So I couldn't really see that would cause any problem.

Anyway when I had a close look at the new glass bed I found it was like half a millimeter off the heated bed surface in one corner.
The new glass was just not exact flat. It wobbled just a bit from one corner to the other when it was laying loose on the heat bed.
I rearranged it and put some better clips to hold it good down at all sides.
First print after that was good. All 5 before that was failing.
So I'm pretty much sure I did find the problem.
Guess the learning is heated bed/glass temp problem can give this strange problem that adhension cut loose like after more that 1 hour printing.

Thanks all for feedback. It help a lot to give new ideas for troubleshooting (tu)]]> sidhabo Reprappers Sat, 25 Mar 2017 16:38:50 -0400 https://reprap.org/forum/read.php?4,758004,758092#msg-758092 Re: Printing temp versus adhension https://reprap.org/forum/read.php?4,758004,758092#msg-758092 Which may times is a good idea ... what has last changed since all was good ?
Just to get back to base I tried my normal setup and filament.
Still had the problem :?
So I'm back to zero. Something else is causing the problem. Nothing to do with change of filament ....
Same kind of problem for same printout ...... that was working before numerous times.]]> sidhabo Reprappers Thu, 23 Mar 2017 18:11:52 -0400 https://reprap.org/forum/read.php?4,758004,758090#msg-758090 Re: Printing temp versus adhension https://reprap.org/forum/read.php?4,758004,758090#msg-758090
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etfrench
Is your printer enclosed?

Nope, normally not. Not in conjunction to this problem. I do have a housing that I can use if needed. I use it typically for printing that is thin walled ( 2-5 mm ) and pretty high like 10-15 cm]]> sidhabo Reprappers Thu, 23 Mar 2017 18:03:50 -0400 https://reprap.org/forum/read.php?4,758004,758065#msg-758065 Re: Printing temp versus adhension https://reprap.org/forum/read.php?4,758004,758065#msg-758065 etfrench Reprappers Thu, 23 Mar 2017 15:35:48 -0400 https://reprap.org/forum/read.php?4,758004,758050#msg-758050 Re: Printing temp versus adhension https://reprap.org/forum/read.php?4,758004,758050#msg-758050 Floyd Reprappers Thu, 23 Mar 2017 13:57:14 -0400 https://reprap.org/forum/read.php?4,758004,758049#msg-758049 Re: Printing temp versus adhension https://reprap.org/forum/read.php?4,758004,758049#msg-758049 the_digital_dentist Reprappers Thu, 23 Mar 2017 13:56:15 -0400 https://reprap.org/forum/read.php?4,758004,758045#msg-758045 Re: Printing temp versus adhension https://reprap.org/forum/read.php?4,758004,758045#msg-758045
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Floyd
That sounds too cold for ABS. I print my ABS at 240c mainly. Heck even my PLA I run at 214c

I also always do 240 for ABS
Just that this one last ABS I bought is speced to do 200 - 230 C ...
Hm, maybe it's a wrong spec. I'll try 240 C and see what happens]]> sidhabo Reprappers Thu, 23 Mar 2017 13:25:50 -0400 https://reprap.org/forum/read.php?4,758004,758039#msg-758039 Re: Printing temp versus adhension https://reprap.org/forum/read.php?4,758004,758039#msg-758039 Floyd Reprappers Thu, 23 Mar 2017 13:09:27 -0400 https://reprap.org/forum/read.php?4,758004,758036#msg-758036 Re: Printing temp versus adhension https://reprap.org/forum/read.php?4,758004,758036#msg-758036
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the_digital_dentist
Heat and low speed usually do the job, but don't leave it too hot for the remaining layers or you'll have elephant footing.
Ok, good info. I just had a go doing 215 C . Same fail ....
I'll try start with 230 and go maybe 205 after 2-3 layers]]> sidhabo Reprappers Thu, 23 Mar 2017 13:02:54 -0400 https://reprap.org/forum/read.php?4,758004,758030#msg-758030 Re: Printing temp versus adhension https://reprap.org/forum/read.php?4,758004,758030#msg-758030
Classic example:


]]> the_digital_dentist Reprappers Thu, 23 Mar 2017 12:35:00 -0400 https://reprap.org/forum/read.php?4,758004,758010#msg-758010 Re: Printing temp versus adhension https://reprap.org/forum/read.php?4,758004,758010#msg-758010
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the_digital_dentist
I set the bed for 105C for the first layer and drops to 90C for remaining layers. The printer has a cast aluminum bed with a 1.5 mm layer of PEI on the surface. First layer print speed is usually 25-30 mm/sec. The hot-end is usually set to 240C for the first layer and 230 or 235 for remaining layers.

Ok, so basically little more hot on the first layer will improve adhension]]> sidhabo Reprappers Thu, 23 Mar 2017 10:15:11 -0400 https://reprap.org/forum/read.php?4,758004,758007#msg-758007 Re: Printing temp versus adhension https://reprap.org/forum/read.php?4,758004,758007#msg-758007 the_digital_dentist Reprappers Thu, 23 Mar 2017 09:51:31 -0400 https://reprap.org/forum/read.php?4,758004,758004#msg-758004 Printing temp versus adhension https://reprap.org/forum/read.php?4,758004,758004#msg-758004 Using print temp 240 C. Having no problems.
Now I tried out a new vendor ABS with spec 200-230 degrees C
Clear transparent 3mm
I get problem with adhension. First llike 30 layers look just fine. It's just that after 1 hour, of my total 2 hour print time, the object cut loose from heated bed ... ruined printout.
Like at height 10 mm.
Started using 230 degree C.
30-60 min printouts work ok.
Adjusting Z zero height did not help
A haven't experimented at all using different print out degree since before I had no problem
What is your experience on print temp. Like what effect to observer at lowes limit or highest limet ?
I print on plain glass heated bed 95 degrees C .
Do you think I can fix my problem by adjustin print temp or bed temp ?
Or is it just less good filament with this new vendor ?

The attach is what it's supposed to be when NOT failing ;)

Ha det gött
Bosse]]> sidhabo Reprappers Thu, 23 Mar 2017 09:31:31 -0400