U225X PUBLIC-SAFE CONVERSATION NOTE

RECORD: CHAT-0227
TOPIC: Koozie Holder Print Failure
IMPORTED: 2026.07.25

This note was generated from a matching conversation in the supplied ChatGPT export.
EXTRACTED REQUEST: The bottom of the koozie holder warped pretty bad and it failed again at the very top and knocked over also the super thin supports dont break off at all.

RECOVERED CONVERSATION EXCERPTS
USER MESSAGES:
1. The bottom of the koozie holder warped pretty bad and it failed again at the very top and knocked over also the super thin supports dont break off at all.
2. im going to try modeling these into the print but how do i make it so they will break off
3. so like this
4. ok what did i need to do to prevent the bottom from warping

ASSISTANT RESPONSES:
1. I can see a couple of different failure modes happening at the same time, and I think they're related. 1. The bottom warping is significant The bottom edges have lifted noticeably. That means the part was pulling upward throughout the print. By the time the print got near the top, the nozzle was no longer traveling over a perfectly flat part. Possible causes: - Bed temperature too low. - Cooling fan too aggressive on the first few layers. - Build plate wasn't completely clean. - Large flat part shrinking as it cools. I'd try: - Increase bed temperature 5-10°C (if printing PLA, try 60-65°C). - Wash the build plate with hot water and Dawn, then wipe with IPA. - Turn off auxiliary cooling for the first 5-10 layer…
2. This is actually a much better solution than slicer-generated supports. Since you're designing the part yourself, you can make engineered breakaway braces that are stronger while printing but snap off cleanly afterward. Looking at your model, I'd make three changes. Option 1 (My favorite): Small neck Instead of making the brace full thickness all the way to the part, neck it down where it attaches. [code excerpt omitted] The brace stays rigid, but it only has a tiny connection to the part, so it snaps off easily. I would use: - Brace thickness: 2-3 mm - Neck thickness: 0.5-0.6 mm - Neck length: 1-2 mm. Option 2: Tiny gap (my second choice) Leave a 0.2-0.3 mm gap between the brace and the part. When sliced, the…
3. I think I found another contributor. For small PLA parts, these settings are excellent. For a large flat part like your koozie holder, they're cooling it *very* aggressively. I'd change these Cooling for specific layer No cooling for the first: - Current: 1 layer - Change to: 3-5 layers This gives the first few layers more time to bond to the bed before the fan starts shrinking the plastic.. Full fan speed at layer Yours is set to 0, which basically means it ramps up immediately after the no-cooling period. I'd change it to: Full fan speed at layer: 6-8. Auxiliary Part Cooling Fan This one really caught my eye. It's set to 70%. For a large flat PLA print: I'd try 0% for this print. The auxiliary fan moves a lo…

EXTRACTED KNOWLEDGE / HOW-TO
- Bed temperature too low.
- Cooling fan too aggressive on the first few layers.
- Build plate wasn't completely clean.
- Large flat part shrinking as it cools.
- Increase bed temperature 5-10°C (if printing PLA, try 60-65°C).
- Wash the build plate with hot water and Dawn, then wipe with IPA.
- Turn off auxiliary cooling for the first 5-10 layers if your slicer allows it.
- Add a 10-15 mm brim around the entire part (not just mouse ears).
CONVERSATION SHAPE: 5 user turns / 8 assistant turns
ATTACHMENTS DETECTED: 47

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