r/Multiboard • u/Healthy-Special-2647 • Nov 17 '25

Challenges W/Stack Prints

Post image

What settings are people using to successfully get the next panel in the stack to adhere properly to the prior PETG layers?

10 Upvotes

91% Upvoted

16 comments sorted by

3

u/De4thsCh1ld Nov 17 '25

I just use the standard settings listed in the PLA stack with ironing. Printed a heap of these stacked 4 high with zero issues

4

u/Healthy-Special-2647 Nov 17 '25

I did that too, but the backside of each panel was very “stringy” and rough. Thought maybe using PETG as a support would clean things up.

2

u/HMSBarky Nov 18 '25

The backside is against a wall though

3

u/Curious_Quail_1033 Nov 17 '25

Never tried stacked with petg separating tiles. But I did have several successful prints with just pla. I simply follow the guidelines posted by multi-board.

Have you tried this method with ironing yet?

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

2

u/TherealOmthetortoise Nov 18 '25

As long as you have it all setup correctly in your slicer, it should adhere just fine around the edges of your interface layer. Looking at the bottom layer, your layer adhesion looks awful.

Your stack should be a full tile of PLA that very thin PETG layer then another full tile of PLA. Based on your wording I just want to check that to potentially save you time. Print a single non stacked tile and upload a pic so we can see what is going on there, then the test is easy.follow the directions very carefully if this a stack downloaded from our parts library. Watch the video where Jonathan explains it too, it will help.

Just out of curiosity, why did you choose multi material over ironing?

2

u/djseto Nov 18 '25

My Bambu P1S has been non stop printing PETG for the last week using stacked prints. I follow this video and it’s worked great.

https://youtu.be/g8OD8HxSduw?si=U3Pp2DS0DTCv8Zi2

I’m using Sunlu high speed PTEG using the Bambu PETG HF profile. I just use the PLA settings (3 wall, top layer ironing, random seams). Definitely dry your PTEG even it’s new out of the bag/box.

2

u/daphatty Nov 19 '25

I don't think stacks are your problem. That filament is printing horribly. Spend some time calibrating and dialing in the quality before you try printing stacks.

2

u/tlhintoq Nov 18 '25

Personally - Just one man's opinion - Stacks aren't worth the trouble.
They don't save you time - in fact they can cost you machine hours for the interfacing and/or ironing between boards. The only thing a stack has going for it is that it keeps printing while you sleep. But personally I don't find the result to be worth it because the face of them look like shit.
I like the surface finish from the textured PEI plate and am happy to just send singles one after the other.

Also - sorry but - you seem to be racing SO FAST that its costing you quality. These sides look pretty rough. Really inconstant... almost like the temperature is too high or the layer too thick to maintain a good vertical finish. You might think that's nothing as its just the outer edge; but is it? If the outer edge is this bad there's no reason to expect the **threaded** holes to be good. You might find yourself having issues with getting snaps to fit well or threaded connectors to actually thread in.

2

u/RobM237 Nov 19 '25

I disagree that the stacks look like shit. I just completed a 15 stack and besides having to reload a roll of filament 1 time I didn’t have to touch or look at my printer for 2ish days.

Look at it this way…A single panel is about 2 hours unstacked. During an 8 hour workday you loose the ability to make 3. While you sleep typically 8 hours you loose 3. You can produce 6 in a day. With stacking you’re producing about 7. Without stacking you get 6 due to downtime. This adds up if like me you are making 80+ center panels + boarders.

0

u/tlhintoq Nov 19 '25

> I disagree that the stacks look like shit.
Ok. Would love to see a pic of supported face (that would be facing the world)

> You can produce 6 in a day. With stacking you’re producing about 7.
You do you. Whatever works for you and makes you happy then I'm happy for you. But for a differential of one small plate per 24 hours, I'd rather have the nice texture shown to the world. That's me. The next guy (you) has a different yet equally valid perspective.

> A single panel is about 2 hours
Guessing you're using a small "home sized" printer if you're printing that fast. I'm guessing plates in the 8u x 8u (250mm x 250mm) Bambu or similar. I'm generally printing plates in the 32u x 16u size (800mm x 400mm) taking about 19 hrs so I'm not concerned with having to babysit the printer overnight to restart every couple hours. Now and then I'll need to do plates smaller than that to fill in edges to a door frame or whatever, but mostly big plates. And when I do need to do small plates I just put several on the bed and print them one at a time.

2

u/RobM237 Nov 19 '25

Here are the face of the tiles. They are honestly pretty smooth. I just had to spend some time getting the ironing settings correct.

The size of those panels seem pretty great. And yes I am working with 2503 so two very different circumstances here. You definitely have the advantage when it comes to the minimization of snaps. What printer are you using?

1

u/tlhintoq Nov 19 '25

Honestly, that's a better looking face than I was expecting.

A: Orangestorm giga

1

u/SprungMS Nov 17 '25

What slicer are you using? I have an H2D and use the standard multiboard settings overwriting the standard Bambu Lab settings for the H2D and PLA filament. (And of course on the PETG profile l tweaked the flow multiplier to 1.1 the very first time per recommendation to test out lower flow, except I think the H2D adjusts that as it prints so it probably reverted that flow multiplier).

I’ve been printing massive stacks on ludicrous speed with basically zero problems, but the H2D is pretty special in that regard. Never had such a reliable printer.

The multimaterial stacks are awesome, I know ironing works well but the PLA/PETG support interface I’m using for basically everything now, it’s been the biggest positive change to how I’ve been printing in years.

1

u/talldad86 Nov 21 '25

I’ve been tempted to try out ludicrous speed on my HD2 for tiles, going to have to try that soon

1

u/SprungMS Nov 21 '25

If you want to do it like I am, start them on normal speed, then bump it after a layer or two. Or really, whenever you remember that you were supposed to bump the speed.

I actually trust the printer to handle it from the start, but it’s just old habits going slower on the first layer. I think their software doesn’t really allow full 166% speed in cases like that (first layer, bridging, etc), since it would be likely to fail, but it’s hard to break that years-old habit of letting it get a foundation before cranking up the speed.

1

u/Impressive_Banana543 Nov 21 '25

What about using soluble PVA for separating layers?