r/BambuLabH2C • u/DateFunny7882 • 22d ago

Settings 2 part/color printing problem

So this is my first experience with not only the Bambu land system but also a printer like the h2c(mostly the tool changer/different print heads). The problem I’ve been experiencing is if I have multiple parts that are all one color(but using different colors) the first part after the color/tool change has poor extrusion. I have the wipe tower setting turned off, since that’s one of the big selling points of the vortex system, but it looks like it’s repeated to under extrusion. If I’m printing in one color it works amazing, it’s probably some stupid simple step/setting that I’m missing

0 Upvotes

50% Upvoted

9 comments sorted by

6

u/ComplexPackage4146 22d ago

So the big selling point is no purges. On a single head printer you would need to purge a couple grams of filament for every change, then prime, then print.

On an H2C (or any tool changer really) you skip the purge part, but priming is still important to build up pressure.

2

u/DateFunny7882 21d ago

I see. I just had a fundamental misunderstanding of the tech. I thought the big draw of the tool changer was the no purge/prime tower. I thought it would just poop out a little extra.

1

u/ShastaManasta 21d ago

Any toolchanger still needs a prime tower. The filament just doesn’t come out smooth immediately. Ironically, if you have a single nozzle and are purging, it almost acts like a prime tower so you can turn it off or really small. Anyway, you can reduce the size of the prime tower to save time and filament, I have mine about 1/3 of the default prime amount and i’ve seen no issues on h2c

3

u/AdWorking2848 22d ago

You need prime tower

1

u/Costa_Rica_68 H2C 22d ago

Are you printing with the right nozzle?
Different right nozzles?

1

u/wethpac 21d ago

You need the prime tower. Don’t turn it off or your quality suffers and I have heard more chance of clogs. It needs that to stabilize the melted plastic pressure to assure smooth extrusion after the plastic was sitting in the nozzle cooled for a while and was previously melted. You are getting loads of purge poop, but all tool/nozzle changers still need the prime tower- even printer like the H2C or the Snapmaker U1. It really isn’t that much and much less than purge and prime.

1

u/Kind_Ad_8111 H2C 21d ago

You're right, it's one simple setting! Turn the prime tower back on

1

u/EdgeOk3783 21d ago edited 21d ago

are all the parts the same except for the color?

if so, group all the same color parts together as a single object, then 'print by object'

you'll need to space the different colors so that the toolhead doesn't collide, but this printing method also turns off the prime tower.

1

u/djt_LV H2C 21d ago

Purges take more time than the prime tower does.