sequence and bridge settings

[alaris2 1]

can anyone tell me why I'd want to change the sequence settings? I note the first layer is by default done differently from the others - why is this? what are the benefits of one sequence over another?

and has anyone experimented with bridge settings other than 100% - any success stories or otherwise?

cheers, nik

[Daid 306]

The default sequence of loops->perimeter->infill works best for overhang cases, where the perimeter can be "glued" against the loops, before shrinkage of the infill makes the loops a bit smaller.

The first layer is printed at a different sequence because it doesn't have overhang. And then printing the perimeter first gives the best results, as the perimeter can cool down then before the rest it attached to it, giving less warping.

You can change this sequence because for some types of prints a different sequence is better. If you want watertight cups/vases for example, then you want to start with the infill. But in general you almost never need to touch these settings.

As for the bridge settings, the next version will no longer have a bridge material amount setting, as it did not work properly, and affects the whole layer with the bridge in it.

[alaris2 1]

thanks Daid - so if i foolishly changed the default sequence to match the first layer sequence, I'd probably expect the perimeters of the object to not attach properly, perhaps even break up on parts with overhang? (since it will effectively be printing in thin air?)

[Daid 306]

Depending on the amount of overhang on your model it might just work fine. The setting is not so bad that it messes up your whole print, it just comes out a bit better with the default in most cases.

[alaris2 1]

so I shouldn't get..

http://i177.photobucket.com/albums/w228 ... 000010.jpg

and

http://i177.photobucket.com/albums/w228 ... 000009.jpg

?