Help for support Z top distance

Hi there, I am printing some figures and I have problem with the support. I don’t want use PETG as layer between the object and the support because my AMS is still prone to get stuck with PETG in retraction.
Looking for help also about this topic.
So I will use the normal PLA+ - PLA+ setup, I added 3 layer on the top support, threshold angle 15° ( but i do with hand), the problem is that I print @0.12 and put Z distance @0.16 but still stick and sometimes hard to remove.
Any suggestion?
My settings


Why not using PVA filament as support ?

That’s a good point, many figures have a lot of branches from tree supports and I want to avoid hundreds of filament changes just for super small areas, also at least with petg when I used it as a support interface I have had a lot of retraction error. So I would try a way to use it at is best using the old school :slight_smile:

You should have better success setting top layer interface to 0 (no interface layers) and then adding .02 to your bottom and your top interface distance to the model.

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Ok, will try this evening, bottom interface is no problem because i do always support only from plate, the other 2 I will try.

Did this help you? Did you resolve your issues? I am having a major hurdle with supports myself, I dont find using interface filament a solution, because of how many filament changes there would have to be for entire of the print.

@internetofmine, I do this on every print now and it works beautifully. Give it a try and you won’t look back.

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Yes solved my issues

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Well I damn, it did help, thank you a lot! This is first time in 3 days this particular model of mine printed without blowing up! Could you explain me what exactly happens that this helps?

Ok, thanks for confirming that it works :slight_smile:

Adding the .02 to the spacing between the model and the support adds just a hint of extra space and that’s the main reason for the easier removal. I like to eliminate the support layer as well between the model and support structure because it always seems to be another opportunity for sticking. Particularly, in organic models this works well.

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Just checking you mean .02 on Top Z distance and Bottom Z distance? I tried this and the supports did come off better but they are still messing up the surface of the model when I remove them… Is that just unavoidable?
thanks!

@user_3840030315, yes .02 (so if the default is .20mm, make it .22mm instead). I also change the base pattern spacing for support to 1.25mm and adjust the angle to be around 45 degrees. Maybe some pictures or a bit more detail about your issue will help.

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Trying to print this… can’t seem to get good settings where the supports don’t really leave a messed up surface after you remove them. I did input the settings you recommended and it’s the best so far.

@user_3840030315, that’s going to be a tricky print for sure. Definitely need to focus on tree supports for this one. The more organic the shape, the more I lean towards tree spurts supports.

I just read this about Z Distance.
"The proper top Z distance in Bambu Studio depends on several factors, including the layer height and the type of support being used. For instance, when using a 0.2mm layer height, the top Z distance should be a multiple of the layer height, such as 0.2mm, 0.4mm, or 0.6mm, as using non-multiples like 0.275mm may not work correctly and could default to the nearest valid value.

So if this is true, would adding a .02 to the distance do anything?

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I don’t believe that adding .02mm will add a detectable difference.

This worked great for me. Do you happen to have some support raft settings that will hold the part down to the bed but come off of the part cleanly when you pull them off?

I don’t ever print with a raft on Bambu. It’s not needed. You can apply the same spacing though on bottom layer and it works well. Typically, if you’re having adhesive issues to the bed itself, you either need to clean the bed or/and consider using glue. Some materials do better than others sticking without it, but the glue is a small sacrifice for not wasting so much material on a raft.

almost all of my prints stick to the bed really well but i recently had to print something that trailed off into a really sharp point at the end and the very tip where it got very thing was starting to warp up off of the bed ever so slightly. When i tried printing it with different orientation where that edge was not against the bed, it had other issues. So i added a raft and it held the end of that tip down against the bed. Its the only time i have had to use rafts to get what i wanted so far. But the raft was kind fo a pain to pull off the rest of the bottom layer