{"schema_version":"1.0","knowledge_version":"printrelay-guidance-2026-11-06.1","method":"curated_guidance","topic":"fits","topics":["getting_started","mesh","fdm","materials","fits","sls","costs"],"process":null,"material":null,"rules":[{"id":"fit-and-clearance","topics":["getting_started","fits","fdm"],"processes":[],"materials":[],"title":"Specify the fit, then validate it","guidance":"Zero-clearance mating parts are unreliable. Clearance depends on geometry, orientation, material and calibration; there is no universal value. Preserve parametric revisions and plan a fit test.","questions":["Is the fit sliding, rotating, press-fit or snap-fit?","Which drawing dimensions and tolerances are critical?"],"source_ids":["prusa-model-design"]}],"questions":["Is the fit sliding, rotating, press-fit or snap-fit?","Which drawing dimensions and tolerances are critical?"],"sources":[{"id":"prusa-model-design","publisher":"Prusa Research","title":"Modeling with 3D printing in mind","url":"https://help.prusa3d.com/article/modeling-with-3d-printing-in-mind_164135","reviewed_at":"2026-11-06","scope":"FFF design guidance; machine, material and settings affect results."}],"services":[{"id":"manufacturing_knowledge","billing":"free","method":"curated_guidance","deliverable":"Source-backed design guidance and questions to complete a manufacturing brief.","price_minor":0,"currency":"USD","payment_enabled":false,"production_enabled":false},{"id":"preliminary_dfm","billing":"free","method":"rule_based","deliverable":"Measured STL observations and explicit review gaps; no AI specialist or certification is implied.","price_minor":0,"currency":"USD","payment_enabled":false,"production_enabled":false},{"id":"budgetary_preview","billing":"free","method":"budgetary_model","deliverable":"A disclosed uncalibrated planning range for supported simple FDM prototypes.","price_minor":0,"currency":"USD","payment_enabled":false,"production_enabled":false},{"id":"dfm_review","billing":"free","method":"specialist_review_requested","deliverable":"Deeper review queued for a specialized agent. The report is available only after the actual review; no completion time is promised.","price_minor":0,"currency":"USD","payment_enabled":false,"production_enabled":false},{"id":"quotation","billing":"fee_offer_required","method":"verified_estimation_requested","deliverable":"Sourcing and verified estimating work requested through the backlog; no live quote is implied.","price_minor":null,"currency":"USD","payment_enabled":false,"production_enabled":false},{"id":"manufacturing","billing":"fee_offer_required","method":"manufacturing_request","deliverable":"Exact-spec manufacturing request for review; acceptance does not initiate payment or production.","price_minor":null,"currency":"USD","payment_enabled":false,"production_enabled":false}],"limitations":["General guidance is free and is not a part-specific engineering approval.","Provider-specific dimensions are context, not measured dimensions of your part.","No supplier availability, price or delivery is asserted."]}