Horrible bridge in 10mm hole top.
Hi all.
I have a small credit card sized magnetic rack ID support that I am printing. The print fits a 10x2mm magnet. I am trying to keep the part as thin and light as possible because I need to print several hundreds of them and want to save as much material as I can. In the images, you can see the print has a small 10mm hole for the magnet. The issue I am having is the bridge. It is crap and sagging and therefore, the magnet doesn't sit flush to the part as would be expected and stick out as much as 0.6mm from the surface. Seems to me that Orca is adding a wall in midair, and then trying to bridge that.
I have attached 2 screenshots. I can't seem to find the right setting in Orca to avoid this behavior. Any help is greatly appreciated.
2 Replies
Decrease the bridge speed to 15mm/s.Most printers have bridge speeds that are way too fast, and this is not the right place to save time.
I usually use 100% fan speed for bridges, but the Vcore 4 has a really powerful cooling fan, so you might want to decrease the speed to 20-50% to stop the bridges from being blown away.
I have dealt with this behavior in orca before. There is a workaround that you need to make on the model itself. Essentially, you have to trick it to make the bridge latch to the walls as it’s currently just floating. It’s not even bridging really since it’s not making contact.
On your model, you’re gonna want to make a very thin gap that is slightly larger in diameter (1 or 2 walls worth) than the hole at that exact height (so 2mm). The gap should be around half your layer height but enough that orca can still register it.
Hope that made sense, I can do a quick drawing for you when I get the chance.