How to make a Thread Tap - How to easily tap a thread - DIY Thread Tap - Putting a tread into metal.

In this video I describe the process of making a thread tap out of a high tensile bolt, for the purposes of cutting a thread when you do not have access to the appropriate tools.

Step by step instructions:

[MKhan-pcdb]

this video might be a little old but I am glad I watched it. it might be a tem solution for metal but a great solution for use on wood :D

[monh]

It takes a genius to simplify the complicated. 👍

[creeator]

Would you still need to harden it for aluminum ?

[practicallysocial]

Do we still need to harden 10.9 grade metric bolts?

[skylined]

Very handy for running through things like suspension mount captive fasteners in particular!

Excellent stuff!

[davidbarajas]

It's informative, clear visually and audio too. And succinct. Wonderfully well done. Thanks.

[BrilliantDesignOnline]

Well done. There have been a number of times I needed a tap of an odd size, and this will be a big help. Thanks for the details of the hardening.
(here from instructables)

[A_youtube_channel_]

Did this exact thing just with a hacksaw instead of a grinder and with vegetable oil instead of salt water. Worked really well actually. The bolt seemed to bend a tiny bit when I quenched it but it didn't seem to be a problem.

[Theodorst]

Did anyone try to make a tap for M3 (3 mm)? I couldn't find taps this small sold separately. Also, do I still need to harden the metal with a blow torch (if the thickness is only 3 mm)?

[diymaster]

Very nice how long will this last for tapping 10mm plastic

[dull_boy_]

Huh, good to know around the shop. Thanks

[hyperhektor]

i didn't you can harden normal steel screws