Tagged “part-strength”

Guide·Hardware·October 10, 2026

Heat-set inserts for 3D prints: sizes, temperatures and installation

What brass heat-set inserts are, the M2 to M5 size families with hole and wall figures, the iron temperature rule, and the 181 kg M3 pull-out from CNC Kitchen's test.

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Guide·Hardware·September 21, 2026

3D printing replacement parts: what works, what lasts, what is legal

Printed parts are weakest across layers: Bambu Lab PETG Basic pulls 51 MPa in XY and 35 MPa in Z; Prusament PETG's interlayer adhesion is 18 MPa against 47 MPa flat.

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Answer·Materials·October 17, 2026

Does wet filament make prints weaker?

Yes: printing from wet filament cost polycarbonate up to 30% of its strength along the lines and 70% across them, ABS 25% and PA6 nylon 43%. PLA held a week at 65% RH.

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Answer·Hardware·October 13, 2026

Can you 3D print car body parts?

Small trim, yes, in ASA and in sections: a common desktop printer builds a 256 mm cube, a Civic is 70.9 in wide, and a printed bumper cover adds no crash protection.

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Answer·Hardware·October 13, 2026

Can you 3D print refrigerator parts?

Yes for bin clips, shelf supports and drawer rails at 40 °F (4 °C). PETG or ABS beats PLA on impact. Gaskets, sealed-system, electrical and water-line parts stay OEM.

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Answer·Materials·October 13, 2026

How long do 3D printed parts last?

PLA showed no strength loss after a year at 25 °C, but 24 h of lab UV-B cut clear PETG's strength 36% and a hot soak halved carbon-fiber nylon's.

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Answer·Hardware·October 13, 2026

How to join two 3D printed parts

CA glue for PLA, PETG, ABS and nylon, acetone for ABS and ASA, epoxy for mixed plastics, a primer for PP, and 0.15 to 0.5 mm clearances for pins, dovetails and clips.

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Answer·Hardware·October 10, 2026

Helicoil or heat-set insert in a 3D print?

In CNC Kitchen's M3 test in PETG, a Helicoil and a heat-set insert pulled out at the same load, but the Helicoil stripped at 1 Nm against 3 Nm for the insert.

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Answer·Materials·October 10, 2026

Is 3D printed nylon waterproof?

A nylon print holds water with 4 perimeters, but the plastic absorbs it: 2.35% for Bambu Lab PA6-CF vs 0.43% for PLA, and soaked PA6-CF can lose half its strength.

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Answer·Hardware·September 23, 2026

How to print a gear that lasts

A numbered gear recipe (material, teeth, perimeters, infill, orientation) plus the 2022 Polymers wear test where PETG gears outlasted PLA by 22.3 percent and ABS by 37.

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Answer·Materials·September 23, 2026

Which filament should you use for a replacement part?

A decision table from what the broken part faces (heat, sun, load, chemicals) to a material class, with HDT, impact and absorption figures from manufacturer data sheets.

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Answer·Hardware·September 23, 2026

Which print orientation makes a replacement part strongest?

Lay the load along the layers: Bambu Lab PETG Basic pulls 51 MPa in XY and 35 MPa in Z, and CNC Kitchen's PLA coupons gained 27 percent tilted to 45 degrees.

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Answer·Hardware·September 23, 2026

How to design snap-fit clips for replacement parts

Cantilever clip rules from Bayer's snap-fit guide: taper the arm to half its root thickness, fillet the root, keep strain under 2.5 to 4 percent, print the arm flat.

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