- Joined
- Feb 2, 2013
- Messages
- 3,627
Hi Guys,
i'm at it again...
here it is ,
a 3/4"-10 TPI 3 Flute Wood Tap, from Scratch MKI
this is my first attempt at tap making.
i have recently become interested in making some threads in wood to make clamps and other wood projects that could use threaded parts.
there are many reputable companies that manufacture them.
i, instead, took it upon myself to make one from scratch.
the material is 7/8" 12L14 hexagonal steel.
overall length is 3-1/2"
minor diameter is .625"
major diameter .740"
the hex was turned on a lathe to .670" to get the major diameter
then threaded to 10 threads per inch to a minor diameter of .625"
the end was tapered to 15*, the pilot end is turned to .600" diameter.
the flutes were cut in a vertical mill, at 10* relief angle.
this steel is relatively soft and doesn't harden or weld well due to small traces of lead, but it is a dream to make things from 12L14 because it machines very nicely.
the nut was store bought, to test the class of fit on my turned piece.
project cost $2.89
total time 45 mins (1 hr 20 mins with mistakes... )
i hope this inspires others to make their own tools, even if they think they can't !
as always, thank you for reading!
i'm at it again...
here it is ,
a 3/4"-10 TPI 3 Flute Wood Tap, from Scratch MKI
this is my first attempt at tap making.
i have recently become interested in making some threads in wood to make clamps and other wood projects that could use threaded parts.
there are many reputable companies that manufacture them.
i, instead, took it upon myself to make one from scratch.
the material is 7/8" 12L14 hexagonal steel.
overall length is 3-1/2"
minor diameter is .625"
major diameter .740"
the hex was turned on a lathe to .670" to get the major diameter
then threaded to 10 threads per inch to a minor diameter of .625"
the end was tapered to 15*, the pilot end is turned to .600" diameter.
the flutes were cut in a vertical mill, at 10* relief angle.
this steel is relatively soft and doesn't harden or weld well due to small traces of lead, but it is a dream to make things from 12L14 because it machines very nicely.
the nut was store bought, to test the class of fit on my turned piece.
project cost $2.89
total time 45 mins (1 hr 20 mins with mistakes... )
i hope this inspires others to make their own tools, even if they think they can't !
as always, thank you for reading!
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