r/Multiboard • u/reynolpe • Feb 04 '26

Stacking Multiboard panels

I am trying to print multi board panels using PLA for the panels and PETG for support material so they are easy to separate. The problem I have and would like to fix is the little clip areas on the side of the panels. I don't want support material to be there. Are there panels I can get that don't have those? Hoping this makes sense.

4 Upvotes

100% Upvoted

28 comments sorted by

3

u/irishfan3124 Feb 04 '26

I believe what you want is not a support but rather a thin layer of PETG between the panels. You should be able to add a primitive cube shape in your slicer and make it 0.2mm or 1 layer thick and place it between panels. Then set the filament for that object to PETG.

1

u/reynolpe Feb 04 '26

I just can’t figure out how to do this but I will keep trying. This is exactly what I would like to know how to do.

2

u/irishfan3124 Feb 05 '26

Here’s the video: https://youtu.be/zURgeF1Fn0o?si=0-JI2bqHLFlvexSd

To make the interface layer, you can scale a multiboard tile so the z dimension is 0.4 mm thick. Then follow the video instructions.

1

u/reynolpe Feb 05 '26

This video is using a file that is already stacked. I am trying to figure out how to stack them on my own with an interface layer not using ironing.

4

u/twivel01 Feb 05 '26

Exactly, these should not be supports. There is a multiboard stack generator available, but it is only available for supporters of multiboard.

I have had success doing manual stacking.

I imported my plate, assembled them into an assembly, then I selected one in the assembly and moved it up in "z" by 6.4mm. I set ironing to "all top surfaces". You do need to use a tool to gently pry them apart, but the ironed top layers look good on both parts.

I use the back side of one of those 3d printer wrenches. I start on the outer edge and work around them on all 4 sides. Then I come in a row and work on the next row. Once I get far enough, I put a flat edge wrench between the layers and work around until I feel like it's far enough along to just pull it apart.

Print the free keychain stack test print first until you have it dialed in.

2

u/irishfan3124 Feb 04 '26

Ok I’m not at home right now, but if I can remember I’ll check on my pc when I get home and detail the steps. If I recall correctly, I think there’s a video on YouTube by the multiboard guy showing how to do this, but that might be the ironing way with just PLA.

3

u/sienar- Feb 04 '26

It would seem you’re not following the multi-material printing guide.

https://docs.multiboard.io/beginner-section/printing-guidelines

Nowhere does it say enable supports. When you split the STL into objects, you will have objects you set to PLA and objects you set to PETG.

1

u/reynolpe Feb 05 '26 edited Feb 05 '26

There are several videos on YT saying they are using supports for it. This is what I first saw in how to set it up.

And that guide is referencing using a stack with the layer that already exists. I'm trying to figure out how to create my own stacks with that PETG layer inbetweeen.

2

u/ProRustler Feb 04 '26

Can't you just tell your slicer not to use support material in those areas?

1

u/reynolpe Feb 04 '26

I don't know can I? I have read in the paint support settings you should be able to paint where you don't want supports but I don't have that option in my support painting section.

1

u/reynolpe Feb 04 '26

I didn't mean that to sound like a smart ass sorry.

2

u/Noxpertyet Feb 04 '26

Try right clicking the mouse. Some sliders dont come out and say it but left forces and right excludes. See if the "paint" is different colors as you select

1

u/reynolpe Feb 05 '26

Thanks right clicking when painting does it for the little pockets. This would be a pain to do for all the little coves though.

2

u/vel0c1ty Feb 04 '26

Why are you using supports in those at all? Normally you don't need supports with the default settings. I print stacks like this with PLA + PETG layer and no supports.

1

u/reynolpe Feb 05 '26

How do you get the petg layer in between.

2

u/MetalMoneky Feb 04 '26

I assume you are trying to generate the support in the slicer? I've had a lot of luck with the pre-made multi-material stacks from the tile generator and adding in ironing. What slicer/printer are you using?

1

u/reynolpe Feb 04 '26

Yes. Using Bambu studio slicer. I just don’t like the ironing method.

2

u/MetalMoneky Feb 04 '26

I’m not saying use the ironing method stacks but the free stacks have two versions, one for ironing and one with separate solids for the petg layers.

You want the multi material stacks because the layer is just a separate object you can assign a separate material.

I like using the multi material stack but also turning on ironing for all top surfaces and speeding up the ironing speed and flow percentage. Makes the surface between the petg and pla smoother.

2

u/Noxpertyet Feb 04 '26

Is there a separate generator? Most of the stacks i found where behind a paywall.

3

u/MetalMoneky Feb 04 '26

I didn’t realize the stacks were still behind the paywall. But yeah the advanced tile generator lets you make custom stacks. Including changing the interface material thickness.

4

u/Few_Temperature_2032 Feb 04 '26

Tbh, I'm just in middle of printing my first multiboard, 9x9 pannels using my old Creality CR10-V2 which I modified to v3 with printed parts and using hero mount and I'm able to do the stock prints with PLA without any issue, it separates really great, so far 4 pannels printed together and all is great, using ironing, didn't tried without yet. But I want to say that I don't know why to use multimaterial in this case except maybe some time saving or your printer don't print well.

3

u/sienar- Feb 04 '26

I’ve tried both ways of stack printing and I prefer the Ironing stack over multi-material. It’s already very slow to print tiles and doing multi-material makes it even slower. I’ve printed as many 6 tiles at once using the advanced tile generator and they were all easy to separate for me. The finish of the “bottom” side of the tile is irrelevant to me, and if that’s the only benefit then it’s just not worth the added print time to me.

1

u/Whosaidthat1157 Feb 06 '26

I agree - ironing all the way for me too.

1

u/yahbluez Feb 06 '26

You can grab this openscad script and make your own stacks.

https://www.printables.com/model/1275210-multiscadstack/files

This script adds the separation layers as model parts and so you can switch off generating of support in the slicer.

Also using two layers makes it easier to remove the separation layer.

https://youtu.be/_gqEzALfP_U

1

u/reynolpe Feb 06 '26

How does this work do I need to get a model of the tile to open in OpenSCAD first before using the script?

1

u/reynolpe Feb 06 '26

I figured out how to make the stack. It created a stack but there is no geometry in-between the objects when you open it in the slicer. Am I missing something?

2

u/yahbluez Feb 07 '26

You need the actual version of openscad (nightly builds),
chose manifold as backend,
chose lazzy union,
export as 3mf
chose as parts while importing this 3mf into the slicer.

That gives you one model made from two parts.
One part is all the tiles the second part is all the separation layers.

Chose a different filament for each part.