I've Gone and Done Something Mental

[ajlelectronics]

Have a look for a temperature tower on thingiverse. There should be one for the Ender 3 helped me a lot when starting with PETG...

I will, thanks.

 

[ajlelectronics]

MkIII version of the overdrive inhibit switch. Previous version was not fail safe so this version is.

 

[ajlelectronics]

This is where it goes. The yellow one is a PLA prototype which I will offer up to check, before I print an ABS version.

 

[ukracer]

53 pages. Over 1k replies.
I agree with A J we do need a 3D welding section.

 

[ajlelectronics]

4mm out of line! The operating lever fouls the bottom of the switch holder, so that is a partial redraw of the plate. Otherwise it looks like it might be somewhere near.

 

[ajlelectronics]

Dissapointing.

 

[Anguz]

File a bit off

 

[ajlelectronics]

Disappointing ABS print:

 

[ukracer]

Disappointing ABS print:

View attachment 314829 View attachment 314830 View attachment 314831

Many ABS prints are.

 

[ajlelectronics]

Many ABS prints are.

I have just started a PETg version. It seems to be sticking down well, but it can't take the same working temperature as ABS.

I have also extended the rail across the front and added a .4mm “mouse ear” on each front corner, hopefully to hold it down.

Perhaps I need to try the “ABS slurry” tomorrow, so will have to remember some Acetone.

 

[JMS1972]

Is that layer separation? Try more heat at the nozzle?

 

[PhillipM]

Way too cold that ABS print.

 

[ajlelectronics]

Is that layer separation? Try more heat at the nozzle?

Warping and layer separation. I tried going up to 245C with no improvement. The last one that I printed in black was more than acceptable, yet the green one which is the same eSUN branded ABS, is just horrible.
I applied more 3DLAC on a fresh part of the bed and tried again, but the adhesion of the first layer was appalling and so I aborted it. It was carefully levelled and I did a levelling run with the BLTouch at working temperature.

I think it knows that I need to get this gearbox installed urgently!

 

[ajlelectronics]

Way too cold that ABS print.

That was 245C nozzle and 110C bed. eSUN say 220-260C for the heat range. What do you suggest?

 

[m_c]

That looks like underextrusion.

I've never tried ABS, so can't really comment much beyond the generic advise.
Either the nozzle isn't remaining hot enough, the nozzle is clogging, or the extruder is slipping.

Have you got anything you could actually measure nozzle temperature with?
I seem to remember the typical thermistor used, ABS temperatures are getting to the edge of it's designed/accurate range, so it could simply be the nozzle isn't as hot as you think it is.

 

[ajlelectronics]

This is PETg. A little stringy but it is flat so far.

 

[PhillipM]

That was 245C nozzle and 110C bed. eSUN say 220-260C for the heat range. What do you suggest?

Depends a lot on the speed you're going and your extrusion sizes too really, I usually print at 250-260, sometimes hotter if I'm pushing more material.

 

[JMS1972]

Did you try a temperature tower? Helped me a lot when I started using PETG. Ideally you should do one each time you try a different filament as they can vary a lot between manufacturers.

Might be worth pulling out the Bowden tube and checking the heat hasn't distorted it? I see you have the blue stuff which is better at high temperatures but even so ...

 

[ajlelectronics]

Did you try a temperature tower? Helped me a lot when I started using PETG. Ideally you should do one each time you try a different filament as they can vary a lot between manufacturers.

Might be worth pulling out the Bowden tube and checking the heat hasn't distorted it? I see you have the blue stuff which is better at high temperatures but even so ...

The Bowden tube was replaced just a few days ago and everything all cleaned out.

I'm just looking for a ready to go ABS tower. The only one I have found so far appears to need the temperatures hard coding into it.

 

[Anguz]

So how do you program in the temp changes or do uou do it from the tune menu?