![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh_cmVxWt0Pe4xCV6mjg3ozWDaoASIcFtEHvds2t74BAZtDggn0mSunb-O-lahWkzsPhr4nb1kMhtvw6LfAfW-mWPAat0U0LHG0IYdBkmF4XPJsOjDpuIhuZ4aVmxJAHgl6-N10iNs-2f-p/s1600/tap+3+004+(640x360).jpg)
I use it for some projects when I have to repeatedly tighten and loosen a piece, it makes things easy.
A piece of hardwood will split if it is not predrilled.
Here is a sample, one side was drilled and tapped and the other side I just turned in a screw and it split right away. The split side will have no strength at all.
To start I used a 3/16" drill bit for the pilot hole for a #14 x 3 1/2" wood screw.
After a pilot hole is drilled I will make the screw tap.
To make the tap I just grind two sides of the screw on my sander giving the screw some teeth ready for cutting.
The screw should be held with pliers and supported on the base.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEim8-1ZENMYfJYd_GQ2zAW-keY-Vy83-2B7d9DW31Ybm9RbXs5c977qJZd3fktyoOst-MuvaQ_y5C31ek_dh8j9NtfSdliKye-JgNPKLuu1Ach-QX80eZfbw0Wtn3OKeDGny5iqeR1J6q7Q/s1600/tap+004+(360x640).jpg)
Here is the screw tap and a regular screw in some hardwood.
The piece of wood is oak hardwood 2x4 and when the tap is used it creates threads and the 3 1/2" screws turns in really nice even by hand.
Here is another piece I tried in hardwood with shorter screws. First I drilled a pilot hole, ground down a tap and turned in a screw.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhEqDpJjZDZCPb4EYdjwoxkpbTHJ2lOlcoEMkNy-rZapXighyc-xU-VXcU6d51ejaOPmN0ihCXwE7OeXxBG6XSMkZPW4lxih9CNmjortflIc4DXWtt8ietaJHjPVVxGrYKZLLzSAy3Lok0o/s1600/tap+027+(640x360).jpg)
After a pilot hole is drilled I will make the screw tap.
To make the tap I just grind two sides of the screw on my sander giving the screw some teeth ready for cutting.
The screw should be held with pliers and supported on the base.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEim8-1ZENMYfJYd_GQ2zAW-keY-Vy83-2B7d9DW31Ybm9RbXs5c977qJZd3fktyoOst-MuvaQ_y5C31ek_dh8j9NtfSdliKye-JgNPKLuu1Ach-QX80eZfbw0Wtn3OKeDGny5iqeR1J6q7Q/s1600/tap+004+(360x640).jpg)
Here is the screw tap and a regular screw in some hardwood.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg7_vVhhICX_ThwzSgxIgdAQPWgu-Fbc_evjlhWL1I0AEDFdkSUqX98oz3_8ifCVQyG69V3m0PP7T8TZgZHeYXqxXlmBeP64r6qwuw-ZDyeS-NfmEc5qYXljRfQFPE8iplSnsMptcVZwyRm/s1600/tap2+008+(640x360)+(2).jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjVYWv-IF3H2zQu7qZYlvRdxo80HxDSE-n73xRvr1167wllDpvHlh198UXkult6RYqA2vTP3rlJ9wGrNB9BTn_FA5mJjy1zvvjBWSZylzN37RgfZ7v-aarFrKEAempJ-DHr0A6VD5RCWqb8/s1600/tap2+017+(640x360).jpg)
I tried the tap on some softwood but it was not necessary although a pilot hole is always important so the wood does not split.
Picture Frame French Cleats on Steroids Pencil Sharpener Mount
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