[TheForge] Re: Wood screw threads

[Mike Spencer]

>> I was wondering if anyone out there knows how to make wood screw or lag 
>> screw threads.

+> Forge a square taper then make it a flat diamond <> then...

*> You could always draw out the stock to a 3 or 4 sided taper, flute the 
*> sides and then twist....

Why taper?  Assuming it's going into wood and you're going to drill a
pilot hole, use an untapered twist.  Experiment until you know what
stock-size/pilot-drill/twist-pitch combo works well.  Use cold rolled
stock: comes with sharper corners that hot rolled.  Lube with parafin
wax or beeswax before screwing in.  Forging to diamond section or
fluting is a bonus for extra thread bite.

- Mike

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Michael Spencer                  Nova Scotia, Canada       .~. 
                                                           /V\ 
mspencer@tallships.ca                                     /( )\
http://home.tallships.ca/mspencer/                        ^^-^^

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