U225X PUBLIC-SAFE CONVERSATION NOTE

RECORD: CHAT-0278
TOPIC: Printing Sleeve Bushing Tips
IMPORTED: 2026.04.06

This note was generated from a matching conversation in the supplied ChatGPT export.
EXTRACTED REQUEST: Ok I need to print a sleeve bushing out of pla. Here are the measurments, .6875 od and .625 id it will be 2 inches tall. I want to print this like I did my washer, all walls. Any suggestions for getting the correct size off the first print? Im not opposed to scaling the model to get there

RECOVERED CONVERSATION EXCERPTS
USER MESSAGES:
1. Ok I need to print a sleeve bushing out of pla. Here are the measurments, .6875 od and .625 id it will be 2 inches tall. I want to print this like I did my washer, all walls. Any suggestions for getting the correct size off the first print? Im not opposed to scaling the model to get there

ASSISTANT RESPONSES:
1. Alright — you’re thinking about this the *right* way already (walls only + scaling tweak). For a bushing like that, you’re basically fighting printer tolerance + material shrink + hole behavior. Let’s get you dialed in so your *first print is damn close* instead of guessing 3–4 times.. 🔧 The Reality (PLA + FDM) - ODs print slightly oversized - IDs (holes) print undersized ← this is your main problem - Tall thin parts (2" tall tube) can get a little oval if cooling isn’t great. 🎯 Your Target - OD: 0.6875" (11/16) - ID: 0.625" (5/8) - Length: 2.000" Clearance depends on use, but for a bolt-on ramp: - You probably want slight slip fit, not press fit. 🧠 Best Approach (What actually works) ✅ 1. Don’t scale the w…

EXTRACTED KNOWLEDGE / HOW-TO
- Let’s get you dialed in so your *first print is damn close* instead of guessing 3–4 times.
- --
- ODs print slightly oversized
- IDs (holes) print undersized ← this is your main problem
- Tall thin parts (2" tall tube) can get a little oval if cooling isn’t great
- OD: 0.6875" (11/16)
- ID: 0.625" (5/8)
- Length: 2.000"
CONVERSATION SHAPE: 1 user turns / 1 assistant turns
ATTACHMENTS DETECTED: 1

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