Hi everyone, iam having trouble printing holes in bridged parts (see pic) without using Support. i already see after i scliced it where the problem is (using Slic3r).
I just wanna know if someone knows a slice programm where i exactly can tell the printer how he have to move on one specific layer when doing bridges, or do i need to write this layer by myself in g-code? or do someone knows another solution for this (no support wanted, also the bottom is the bottom, its only a cut from the hole part)
Would be nice if someone could help me.
#printernoob#proEngineer#badenglish
I can help. What layer thickness are you using and how thick is the surface with the holes?
Here is what I do for cases like this.
Modify the STL and put a surface across the bottom of the holes that is one or two layers thick. Then cut out the thin film surface when the print is done. This allows a standard slicer to generate the code and eliminates the problem of a floating small hole over a larger one. Your printer needs to be able to bridge the full distance with very little sag for this to work well.
Do you have a program that can manipulate the STL file? If not I can do it for you. Just send me the STL file and I can fix it if this solution is one you want to try.
Hi Jeff,
im using different layers on this object, at the point from the surface with the holes it is around 0.15mm per layer, the thickness of the surface is only 1.2mm.
Yeah , i can do this and will definetly try it, sounds simple and effective. ( Im still working on the 3d model, some parts im done with i cut out and print em to see problems. No problem to change it.)
Thank u for ur answer and yes thats one of these solutions i ment, in my case it should be fine 
But i still hope there is a slicer or something that let me configurate a specific layer or part by my own. Would be awesome.
Very simple and very effective. Post a picture of the results. 
I know what you mean by having a slicer do it. The sequence requires creating a complete bridge span (at least one strand) and then treating previous bridge spans on the layer as model edges and creating new bridges to them. At this time it needs to be done by hand. Here is a post on some test work I did on this very thing. With multiple holes that are completely round and floating it would be a nightmare. But it can be done.
https://plus.google.com/u/0/113930448883604105560/posts/iu1ZG2XQYYD
Wow, thats it. Awesome work. I’ll stay tuned.
And yeah, i have learned to programm g-code so i know what to do and was thinking about write this layer or part of it by my own, but that would be very timeconsuming… aaand im to lazy to do it xD
