Tagged “threads-and-fasteners”

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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Answer·Hardware·October 28, 2026

Can you 3D print a garden hose adapter?

Yes. Copy the 3/4-11.5 NH garden hose thread, not 3/4 in NPT, let a rubber washer seal a flat face, and print PETG or ASA upright with four or more walls.

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Answer·Hardware·October 10, 2026

Are heat-set inserts reusable?

Yes, twice over: the brass thread takes a screw in and out many times, and a pulled insert can be set again in a fresh hole. What to check, and what can't be reused.

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Answer·Hardware·October 10, 2026

Which way up does a heat-set insert go?

Which end of a heat-set insert goes into the hole first, for tapered, straight-with-pilot, symmetric and flanged inserts, from Ruthex, CNC Kitchen and SPIROL drawings.

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Answer·Hardware·October 10, 2026

How deep should the hole be for a heat-set insert?

Insert length and minimum blind-hole depth for M2 to M5 heat-set inserts, standard, short and Voron, from the Ruthex and CNC Kitchen size tables.

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Answer·Hardware·October 10, 2026

What is a heat-set insert press and do you need one?

What a heat-set insert press is, the four kinds (printable, kit, drill-press conversion, industrial) with their published specs, and when a hand-held iron is enough.

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Answer·Hardware·October 10, 2026

Do you need a special soldering iron tip for heat-set inserts?

No, a clean ordinary tip works, but insert tips keep inserts square and lift out cleanly. Which tip sets fit which irons, which iron works and how to use one.

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Answer·Materials·October 10, 2026

Do heat-set inserts work in TPU?

Not reliably: UltiMaker advises against heat-set inserts in flexible TPU because the plastic deforms and the insert loosens. What to use instead, and how to test.

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Answer·Hardware·October 10, 2026

How to install heat-set inserts without a soldering iron

No-iron ways to fit heat-set inserts: a flame-heated screw, a hot plate, presses and cold options, with what controls the temperature and how each one fails.

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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·Hardware·October 10, 2026

What hole size does an M2 heat-set insert need?

Hole diameter, hole depth and minimum wall for M2 and M2.5 heat-set inserts from the Ruthex and CNC Kitchen size tables, plus how much to oversize the hole in CAD.

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Answer·Hardware·October 10, 2026

What hole size does an M4 heat-set insert need?

Hole diameter, depth and boss wall for standard and short M4 heat-set inserts: a 5.6 mm hole per Ruthex or 5.7 mm per CNC Kitchen for a 6.3 mm insert.

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Answer·Hardware·October 10, 2026

What hole size does an M5 heat-set insert need?

Hole diameter, hole depth and minimum boss wall for standard (M5 x 9.5) and short M5 heat-set inserts, from the Ruthex and CNC Kitchen size tables.

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Answer·Hardware·October 10, 2026

What hole size does an M6 heat-set insert need?

Hole diameter, hole depth and minimum boss wall for M6 (standard and short) and M8 heat-set inserts, from the Ruthex and CNC Kitchen size tables.

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Answer·Hardware·October 10, 2026

What size heat-set inserts does a Voron use?

Voron printers use M3 heat-set inserts 5 mm across and 4 mm long (M3x5x4): the hole they need, how many each build takes, and the iron temperature for ABS and ASA.

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Answer·Hardware·September 23, 2026

How strong are heat-set inserts in PLA? Pull-out figures

CNC Kitchen's measured pull-out loads for M3 heat-set inserts in PLA: 181 kg for Ruthex, 157 kg for eBay inserts, 39 kg for cheap ones, and how hole size changes it.

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Answer·Hardware·September 23, 2026

Heat-set inserts or captive nuts for printed parts?

CNC Kitchen's M3 test in PETG: a bottom-pocket nut held 166 kg against 119 kg for a heat-set insert, but the insert took more torque. When each fastening wins.

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Answer·Hardware·September 21, 2026

Do heat-set inserts work in PETG?

Yes: brass heat-set inserts hold in PETG at an iron temperature of about 245 °C, and the part stays rigid to a glass transition near 80 °C. Expect stringing from the tip.

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Answer·Hardware·September 21, 2026

How to install heat-set inserts straight without a press

A soldering-iron procedure for square, flush heat-set inserts: iron 10 to 20 °C above printing temperature, melt about 90 % of the way, finish with a flat tool.

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Answer·Troubleshooting·September 21, 2026

How to remove or straighten a crooked heat-set insert

Reheat a tilted insert at 20 °C above printing temperature (240 °C for PLA) and press it flush, or pull it out on a screw in about 10 seconds; drill 5.6 mm for an M4.

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Answer·Hardware·September 15, 2026

What hole size does an M3 heat-set insert need?

Hole diameter, hole depth and minimum boss wall for standard, short and Voron M3 heat-set inserts, taken from the Ruthex and CNC Kitchen size tables.

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