Simplify3D User Forum

Hi,

According to the preview, parts of the ooze shield for http://www.thingiverse.com/thing:329436 would start printing in mid air.

In particular, between the "thumb" and 1st finger on the front feet, which start to appear at layer 41.

Additionally, the ooze shield behind the "thumbs" of the front feet starts out as single dots of plastic, which are highly unlikely to be able to remain stuck to the base plate.

I'm a newbie but I have had previous success on other models using dual extrusion and ooze shield via both the wizard (as used here) and manual config. I'd like to know if I'm doing something wrong.

Factory file is attached.

Thanks,

Mark

I would definitely call it a bug, but others will probably say that's how it's supposed to be. Either way, it's not going to print as you would like.

You can work around it by changing the ooze shield type to vertical or contoured.

Well first off, I had to change the layer height of the second process to 0.2, because you had it set at 0.3mm (and you can't have 2 different processes with different layer heights if you want to use an ooze shield)

For your question about the ooze shield starting in mid-air, there's no other way to print a contoured ooze shield with a part like this unless you do that. Otherwise, the shape won't be right. In reality, the "contoured" and "waterfall" ooze shield sidewall shapes only work for some specific types of models. If you want something that will work for every type of model, just use the "vertical" sidewall shape. That would work fine for your part.

That being said, I've done many dual-color prints where the ooze shield looks just like yours did and it ended up working fine. Even though it's extruding in the air, it eventually has enough plastic to stay in place and ends up working fine.

So to summarize - try printing it as-is (you may be surprised) or use a "vertical" sidewall shape

Thanks for all the replies. I consider this a bug.

The original setting was for a "waterfall" ooze shield. That's the form that displayed the printing-in-the-air bug. I switched to "contoured" and it worked well.

Personally, if the preview showed an error, such as printing in mid air, I wouldn't proceed. I'd expect to find the air printed portion tangled into the rest of the model.