Minimum layer height for internal bridging
 
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Thingy
(@thingy)
Active Member
Minimum layer height for internal bridging

When printing with a larger nozzle, 0.5mm and up, and having a low (perimeter) layer height 0.1mm, the extruded material is so little that bridging fails completely and just deposits a small amount of fileamnt at the edge es of the hole.

Using combine infill doesn't use this setting for internal bridging, ie covering holes that have infill on top of them.
Or even with regular noncombining inill layers, a setting that the first bridge layer should have a certain minimal height, would help a lot.

This topic was modified 3 weeks ago 2 times by Thingy
Posted : 12/10/2024 8:28 am
Diem
 Diem
(@diem)
Illustrious Member

That sounds right, use a thicker layer height.

Cheerio,

Posted : 12/10/2024 11:24 am
Thingy
(@thingy)
Active Member
Topic starter answered:
RE: Minimum layer height for internal bridging

That is not a solution, that is a workaround. And it would look terrible.

Posted : 12/10/2024 2:38 pm
Diem
 Diem
(@diem)
Illustrious Member

Tough.

If you want optimal performance from a low layer height you must use a smaller nozzle.

Cheerio,

Posted : 13/10/2024 3:26 am
Thingy
(@thingy)
Active Member
Topic starter answered:
RE: Minimum layer height for internal bridging

That is so true, some prints though, like spheres, that have low resolution in xy, but gets a boost by higher z-resolution. And I'd prefer to print those in halves with a square connector part. Great as a guide when you glue them halves together under pressure.

Now I could print a large sphere with a 0.2 nozzle, but god damn that would take time.

This was just an example, there are other objects that has similar properties.

Posted : 13/10/2024 12:02 pm
Diem
 Diem
(@diem)
Illustrious Member

Like many high precision parts the better answer is to print slighly oversize and machine to fit.

Now I could print a large sphere with a 0.2 nozzle, but god damn that would take time.

Bu not your time, machine time, if it matters you can add another printer.

Cheerio,

Posted : 13/10/2024 4:09 pm
Thingy
(@thingy)
Active Member
Topic starter answered:
RE: Minimum layer height for internal bridging

Still not an answer, just workarounds. And adding another printer would half the time to print two objects, not one. But in the example I mentioned the equation is valid, since it comprised of two half-spheres.

And also, this would double the electricity cost and space needed. And since very few in the reprap community is working with this in a factory/workplace setting, space is at a premium (most likely a part of living space).

Posted : 13/10/2024 9:40 pm
Diem
 Diem
(@diem)
Illustrious Member

 Still not an answer, just workarounds. And adding another printer would half the time to print two objects, not one.

Correct, it is a workaround - we are regrettably unable to use magic.

Cheerio,

Posted : 13/10/2024 10:05 pm
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