Bvoh adhesion and spagetti

Bambu Lab X1 Series Troubleshooting
1

Hi guys,

I am using Verbatim bvoh as support and have major issues with warping and spagetti. Any advice here?

Noozle = 0.6
Bed temp: 60
Noozle Temp = 200 cels.
Textured Plate

2

What plate are you using? The temp on a Cool plate tends to run a bit low. There’s a long thread on here about PLA not sticking and the general consensus of opinion is to bump the bed temp up a little.

If you’re using PEI Textured plate it must be even higher as the plate is thicker and PEI is a heat insulator. Roughly 10-25°C hotter.

There’s a lot of reasons for warping, I suggest you use the Search on here for some posts as there’s a lot of advise out there already. Generally it’s Chamber temp or needing a Brim.

You’ll really need to give a lot more information for any of us to help. What you gave is only basic info, all we can do is guess! :wink: :grin:

Spaghetti is generally caused by poor layer adhesion. There can be many reasons.

UNRELATED - A tip on the Spaghetti detection - Be careful not to have strong light or sunshine shining in the printer, also multiple light sources that cause shadows. All that can fool the camera system and have it indicate Spaghetti when the print is fine. Just a tip for the future. :slightly_smiling_face:

You might take a look at this, it’s handy to have you help spot problems. Some things like the problem you’re describing are general 3D printing knowledge, not the BL machines.

3

According to Verbatime, the density of the material is quite a bit lower then PLA or PVA. I would suggest Nozzle temp of 220 and set the density to 1.14.

4

Okay I learned some things and found a solution

  1. BVOH should not be used in the first layer. So choose as “base” for the support PLA or something else and BVOH only as support interface
  2. BVOH should not get in contact with the bed in the first layer, as it has very bad adhesion on the bed
  3. BVOH is used best, when the first layer is already printed and BVOH is printed on top of PLA. Then you should not have any issues.

BVOH on top of PLA = Fine
BVOH on the bed or as starting print = big mistake and should always be avoided. You will 100% get warping and spagetti.

2 Likes
5

Glad to hear you puzzled it out!

Just a thought, but I suppose you could print a Raft of PLA or whatever, the BVOH would then be on the raft, not the bed … :slightly_smiling_face:

6

Yes, that should work, but only be required in some extrem cases. BVOH is too expensive anyways to use for anything other then the support inferface, but there is really shines.
Unless you really want to print an really expensive fake soap cube :slight_smile: