KISSlicer 1.5 Beta 2 - in development

[626Pilot]

One change I notice from older versions is that if you select multiple STLs in the Open dialog, it merges them into one, presumably for multiple extrusion. Is there a way to have it add them sequentially, like it did before?

[626Pilot]

Found a bug in the support settings. I can set Z Gap to 0.1, 0.3, 1.0, etc. It will have no impact on the generated support, which will go all the way up to the layer it's beneath.

[626Pilot]

Found another bug - it's pretty bad! In some layers of a complex model (Plunderbuss Pete), some loops are not closed, and interior paths travel in strange ways (sometimes even crossing empty space) to get from one path to the next. The majority of layers are fine, with maybe 5-10% showing this behavior.

Model: http://www.thingiverse.com/thing:144775

The model loads with no mesh errors at all, so this has to be internal to KISSlicer. It may have to do with the extremely fine resolution of the mesh. I tried another complex mesh ( http://www.thingiverse.com/thing:40094 ) and this error didn't manifest.

[frozen.rabbit]

@626Pilot

The open loops are from your Gap set to 2.

Error checked the mesh, there are 3920 self-intersecting faces that KS is not error flagging.

[funBart]

I checked your model, and although Kisslicer doesn't flag errors in the stl, there were some.
I repaired it for you. It seems much better now. I hope it helpt!

the repaired file:

http://www.thingiverse.com/thing:729684

Bart

[626Pilot]

The open loops are from your Gap set to 2.

A normal model doesn't get sliced with a giant concavity in any of the layers. It has to be a side effect of the mesh.

Error checked the mesh, there are 3920 self-intersecting faces that KS is not error flagging.

You're right on this. I ran it through Netfabb and it slices properly now. Sorry for the false alarm!

[Tonmaakt]

Hi Jonathan,
I work with version 2.20, it works fine with nice new features.

For the interface layer I use PVA, all the other materials including support material is set to PLA.
The PVA material does not create a layer, but it crumbled.
Apparently bonding on the support material is not good.
For the support material I use the “fine” setting.
I think that it has to do with the less good print properties of PVA.
The question is:
Is it possible to print the first two layers of the interface in PLA and then some layers PVA?
We would like to hear from you.

[lonesock]

I just added in the Linux builds for 1.5b2.20. Sorry for the delay, Linux users!

@626Pilot: Some of the behavior you were seeing was in the old beta 2.16 build, so please try the b2.20.

@Tonmaakt: Do you mean that the first few layers of support interface would use the same material as the main support, so that it sticks better, then the chosen support interface extruder would continue up from there? If so, I think that would be fairly hard to do in the general case (for example on a sloping surface, there would be shifting regions of the support interface that would use different extruders).

thanks,
Jonathan

[Tonmaakt]

Thanks for your answer.
I get your point.
Than could for example, 50% of the field be printed in PLA and 50% in PVA.
No idea if it is difficult for the program to determine which of the two parts in PLA or PVA should be printed.
Maybe this option for only horizontal planes is easy to make.
No idea what the possibilities are, I see so many intelligent tricks in the software, no idea where the opportunities stop.
Or has anyone an idea to fix the problem of the poor adhesion of PVA on the support material?

[Davide Ardizzoia]

I am not a fan of PVA:

-if you leave it some minutes at melting point it will degrade and jam the nozzle
-it is *very* hygroscopic (like a sponge)
-ABS adhesion is a joke most of the time

Anyway I see some ways to handle bad PVA behaviours:

- turn off nozzle when not used (preheat = 140°C)
- use prime pillar or wall to prime and clean nozzle from degraded polymer
- go sloooow to promote adhesion


Davide Ardizzoia