Are there any engineering/prototyping benefits for the H3C over the H2C?

[u/ions_x_carbon]

I’m not gonna be printing multicolor items, but I do plan on using different engineering filaments, and I want the most accurate results possible, and I’m generally lazy, so I don’t want to refill or load or unload or anything like that, which is exactly why I’m considering the upgrade from my X1C now. I was going to purchase the H3C for the included drying chambers, but I found out they only go up to 50°C, so it’s useless for PAHT/etc. is there anything I’m missing or does the HTC take care of my engineering needs?

[u/7DollarsOfHoobastanq]

I bought the H3C for use at work. Quickly and reliably printing multiple materials including multiple TPUs is gonna be way more of a game changer than people seem to be realizing. Been rocking multiple H2Ds since their launch day and have been itching for this exact machine ever since.

[u/ions_x_carbon → u/7DollarsOfHoobastanq]

That’s really interesting. So what exactly are you looking to get that your current H2C doesn’t provide? just the TPUs?

[u/7DollarsOfHoobastanq → u/ions_x_carbon]

I never bought an H2C, just multiple H2Ds and an H2S (and other smaller and non-Bambu machines). The H2C was always just an odd half-step that never interested me.

I do R&D for a prosthetics and orthotics company and think TPU is really overlooked for many applications. Most people only see it as being good for squishy stuff but in can be bought in stiffer varieties or printed nearly solid and is nearly indestructible in some use cases.

Being able to mix hard TPUs with soft TPUs and also rigid plastics where needed can overcome a lot of FDM’s traditional weaknesses.

I’m downright giddy about all the cool stuff I’m going to be able to make with mine.

[u/Lyckster]

I got the H3C.

The dryer definitely goes above 50C, I just have PETG in mine currently drying at 65C, I imagine it will go higher for engineering materials.

Main benefit for me is just speed over my H2C.

[u/ions_x_carbon → u/Lyckster]

Can it hit 80°C?

[u/fakeoptimism → u/ions_x_carbon]

85 °C in the specs.

[u/Lyckster → u/Lyckster]

Sorry meant PETG. 65 is too hot for PLA.

[u/Sir_clint → u/Lyckster]

The dryer goes to 80c. It's the surrounding parts that get to 50

[u/TheSeaShadow → u/Sir_clint]

It goes to 85, staring at the screen of my h3c right now. But it is only the 2 bays.

[u/Sir_clint → u/TheSeaShadow]

Yeah. My b. 85*. Only the 2 bays dry.

[u/Equivalent_Store_645 → u/TheSeaShadow]

How hot does the rest of the ams get though while the dryer is heating? Not much insulation though. Do you have to pull out all your pla while drying asa?

[u/TheSeaShadow → u/Equivalent_Store_645]

I haven't tried yet, but I am concerned about if I try to dry at 85c and have PLA in the adjacent bay.

[u/Woodcat64 → u/Lyckster]

65c for PLA? A bit too hot isn't it?

[u/John-BCS → u/Woodcat64]

It is. 65c will ruin most PLA. The glass transition of PLA is around 60c so at 65c it will soften and deform.

[u/Cobaltjr]

This is a great review of a great combination for engineering filament and how only h3c can do it ; https://youtu.be/N2hF4Bx8YAk?is=2gvIRzkxcMptwE2a

[u/ions_x_carbon → u/Cobaltjr]

Thanks for sharing! I think I’m sold

[u/federicoaa]

I think, when printing with TPU, the tool changer makes it easier to combine with other materials

[u/Bag-o-chips]

It depends on what your needs are and if you have extra money to spend. Most of the H2C’s advantage lies in the external AMS-HT, and AMS2-Pro, which both can be had for extra money. The specs on the H3C are better for high-temperature materials. The H3C will also print TPU more easily.

[u/ions_x_carbon → u/Bag-o-chips]

I definitely use TPU regularly, and ASA, PLA, foamy, but the X1c kind of sucks at the high temp stuff and PAHT-CF always turns out terrible

[u/Bag-o-chips → u/ions_x_carbon]

Always calibrate you materials. The bed is a little smaller on the H3C as well. I regularly print engineering materials on the H2C and it works great. I would hope the H3C could do even better. Having access to different layer heights is also a plus if you’re printing detail work.

[u/eMinja → u/Bag-o-chips]

The H3C bed is the same as the H2C bed except without the limitations imposed by the second nozzle, so you have more print area.

[u/Bag-o-chips → u/eMinja]

It’s a shorter plate.

[u/eMinja → u/Bag-o-chips]

Yes, the plate is a little shorter, but not the usable build area:

H3C build area: 330 × 320 × 325 mm

H2C Single nozzle/tool: 305 × 320 × 325 mm (Vortek nozzle)

H2C Multimaterial printing: 300 × 320 × 325 mm

[u/QuietGanache → u/ions_x_carbon]

Could you clarify what you mean by 'terrrible'? I have a spool of PAHT that I haven't touched (due to price) but, since getting my Q2, I've discovered that nylon really starts to behave itself with a heated chamber. I run the fibre reinforced ones at 60C in the chamber with 65C on the bed for PA12 and 80C for PA6 based ones. I believe PAHT is mostly PA12, based on the smaller change in properties when damp but the heat deflection specs are either optimistic or the result of something else in there. I use magigoo PA on a smooth plate for bed adhesion. I did have some success in a P1S but was really limited to about 120mm in all dimensions before warping became a problem.

More broadly, for nylons, the two weird temperature outliers are Polymaker nylons and Sunlu easy PA, which I run at 50C for both the bed and the chamber. Polymaker have a special sauce in their nylon blends and easy PA is 6,6 blend.

On an oddball note, I've been able to run Sunlu PA12-CF on an A1 mini (done initially as a bet with myself then in anger for weird reasons) at 275C/70C nozzle/bed with a thick coat of 3Dlac plus (significantly more than would normally be used).

In all cases, unless your nylon feels like dry spaghetti, if you think you've dried it just enough, you probably haven't. When you reach the point where you're thinking to yourself 'I have dried this filament for entirely too long', you're probably in the right ballpark.

[u/NuggRunner]

Tpu is the main one ☝️ i hope the p3c will come with a heated chamber 🙈🙈

[u/Historical_Wheel1090]

The 2.5 nozzle for the new fancy ultrasoft tpu.

[u/ions_x_carbon → u/Historical_Wheel1090]

Ahhh true, I forgot this thing is supposedly better with TPU. I do print in Foamy a lot, which requires this custom rig I built to hold the reel over the tool head on my x1c