JMcFly's First Build: #1627

I tried that, but after a day of printing, prints started to show signs of wet TPU with a RH of 40%. How are you doing that in Florida? Are you changing out your TPU between prints?

I haven’t had any troubles. But my A1’s are the closest printers to my large room dehumidifier that runs 24/7. Still have 40% humidity in the room, but the filament doesn’t soak it up instantly.

I have been using the HT AMS just as you almost in the same config just a little closer to the printer and aliened with the inlet port. I found this on makers world https://makerworld.com/en/models/2705683-v2-ams-ht-desiccant-storage-tpu-spool-riser#profileId-2999150 it helped with the resistance. I also had to dry my TPU for 18 hours. I am using Bambu 95a HF. no issues printing for 32 hours. I also have a Humidify sensor in the HT I can see the values with Home Assistant. I was able to say under 10% for the entire print.

I’m in FL too and the house seems to sit at 45-50 RH which is HVAC industry standard. If it rains it does go up until the AC can catch up.

I want to print from my drier so I’m hoping the TPU assist module fixes the under extrusion and I will do a cold pull before swapping to TPU

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I know there have been issues with people printing from a drier that is drying. I don’t know if the issue is heat creep or if the warm filament is to soft so the extruder has challenges. If the drier maintains a low RH and the dryer is off, I think that works great. Has been working great from my dry box.

I havent made a drybox yet, but I suspect I will need to. What do you have as far as a dry box?

looks home made

:rofl:

Yup, I found this on Makerworld:

https://makerworld.com/en/models/215704-dry-box-cereal-box-spool-hygrometer#profileId-234889

I happened to have a few 608 RS bearings just lying around…:rofl:

Then one of those cereal boxes everyone keeps 1 kg spools in.

Then I printed a PTFE connector:

https://makerworld.com/en/models/1614559-diy-drybox-connector-cap-filament-retainer#profileId-1703556

I use these on a lot of my other printers…

https://www.printables.com/model/322208-ultimate-spool-roller-v2-21cup-dry-box-compatible

Goes inside one of these…

I use a sealed Polymake dry box, now $27 on Amazon here: Amazon.com: Polymaker 3D Printing Filament Storage Box - PolyDryer Box for Continuous Filament Sealing and Protection, 3D Printer Filament Holder Compatible with PA Nylon, PLA, PVB, PETG, ABS, TPU 1.75mm 2.85mm : Industrial & Scientific

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Now I get the cereal box reference. I was trying to figure out how a card stock box worked.

I’ll have to make one too

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I am brand new to all of this. I saw the TMT on facebook and bought the p2s so I could help build them. I printed the tpu wall holder for it. When it was taking to long I bought the x2d and tried the top tpu holder. The x2d threw the roll 2 times so I just hung it from the external spool holder. Both rolls were dried in the sunlu s4. Both rolls are sunlu brand high flow tpu. The humidity in my room is 55% and they printed well with the bambu hf tpu setting. I did have to reprint some straps but everything else printed well. With little scaring marks on the corners that I smoothed out with the heat gun. Be sure to print the same plate 2x for the tires. I made the mistake of printing one of each plate and they are very different density. I am now waiting on more tpu to redo them. Have fun :slight_smile:

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I take my hat off to you. (now where did I put my hat emoji?) Anyway… way to go. So glad you are here.

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I really need to clean my work area.

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That’s almost how I had my tpu setup

First time using 3dhojor tpu. I am nervous bc there seems to be a little more resistance to feed the filament than I am used to with geeetech. But 62 layers in and so far so good.

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Heater off and feed and speed set to 50%

Muuuuch better just takes 6 hours for one

It did print without an issue. A full plate shows 21 hours and if I run it at 50% that’s 42 hours. Is that right?

I probably didn’t even need the TPU assist module and should have gotten a .6 nozzle

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I don’t ever slow down to 50% If the volumetric speed is set correctly that will keep the speed in check minus the rapids maybe. But that shouldn’t be an issue on anything but an A1. Regular 95a with the Bambu 95a profile, 95a HS/HF and 98a I run on the bambu 95a HF profile. As long as I am not having any feeding issues then it works perfectly fine in my experience.

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I’ll give it a try. I’m guessing my issue yesterday with with the warm filament.

@NWCC I haven’t done anything in regards to volumetric speed. I’m just using default settings

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Right. And as long as you are using the correct profile, and your filament path is good, you should never NEED to slow down to 50%

Well something is wrong because I did a plate of 3 tires and I just pulled them off and they all separated at multiple layers when I peeled them off. They were also very stringy.

My one successful tire I printed at 10% instead of 15% so that’s also a waste. I had printed that one at 50% speed.

TPU is no joke. I did two cold pulls before loading the TPU and it was dried but stored in my AMS with 20% humidity.

What’s really making me frustrated is that I can’t really sit down and figure it out. I have family coming this week, still waiting for the TPU assist parts, it takes forever to dry, and just life in general.