AR view

Spark plug thread starter

Start spark plugs without cross-threading

Push the soft tube onto the top of a spark plug and use it to lower the plug down a deep plug well and start it by hand: if the thread begins to cross, the tube slips instead of forcing it, so you never strip the thread in an aluminium cylinder head.

Customize this model

Size (Base A): Ø 16 mm, 60 mm tall
Shape: Round
Walls: 3.2 mm
Volume: 3.3 cm³
Est. weight (PLA): 4.1 g
Parts to print: 1
Category: Trade & professional tools
Made by: Krypto
Built in: 16 steps

What’s in it

Round, Ø 16 mm, 60 mm tall, with 3.2 mm walls
Engraved text: “START BY HAND”
One more base built on (Base B)
Base B: round, Ø 26 mm, 20 mm tall (stacked)

How to print it

Print in TPU.

Prints as shown on its floor, no supports. Stacked parts are fused into one print.

Filament: at most about 4.1 g of PLA printed solid (roughly $0.08 at $20 per kg); normal infill uses less.

To get the files, open it in the generator and choose File › Download STL (one file per part) or Download 3MF (every part on one plate).

Questions

What size is the spark plug thread starter model?

The spark plug thread starter model measures Ø 16 mm, 60 mm tall. That is Base A; one more base is built on. You can change every size in the free SO3D.xyz generator before you download it.

Does it need supports?

No. Print in TPU. Prints as shown on its floor, no supports. Stacked parts are fused into one print.

How much filament does it use?

At most about 4.1 g of PLA (3.3 cm³ printed solid), roughly $0.08 of filament at $20 per kg. Normal infill uses less.

Can I change it?

Yes. Open it in the SO3D.xyz generator (free, in your browser), change the size, walls, dividers, holes, text or anything else, then download it as STL or 3MF for your slicer.

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Make it fit your space

Change the size, walls, dividers, holes and labels of the spark plug thread starter model in your browser, then download it for your printer. Free, no CAD needed.

Customize this model