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Tony's Ruler Idea

Tony recently posted in the UKWorkshop Forum a simple way of creating a long E/W scale from a cheap alloy ruler. Tony has given permission for me to reproduce it here and rather than rewrite an excellent description, I have copied and pasted his description below:

Click on any picture to enlarge it.

"The requirements for longitudinal scale is easily solved with an old (horrible) aluminium ruler that has been in the workshop for ages and cost very little from B&Q. (a DIY Store) I cut it on the band saw, glued it to a piece of ply and fitted it underneath as the T-track is there but also as it allows me to use the rear edge of the clamp black as a 'pointer' where it overhangs the ruler.

The requirement for the crosswise scale is for it to be easily 'zeroed' in different places to make cuts easy to set up.

For instance, for a tenon, I simply subtract the tenon width from the wood width, halve this, and that is the setting I need.
I push the stationary router bit up against the rear of the wood, zero the scale, wind the wood away from the cutter, and then use the scale to set the cut to my calculated value and take the cut.
I then push the stationary router bit up against the front of the wood, zero it, wind wood out of the way, and then push the router away from me until it reaches (minus) the value I calculated and then take the cut.
This takes less time than it took to type or for you to read it. I can easily set the router to a position within 0.1mm which is more than adequate. "

"First, I ripped the 'orrible ruler."
 

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"Then I glued it to some ply - finally, those car boot sale clamps come in useful."

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"I drilled 4 holes for the 8mm bolts to fit in the T-track with wing nuts for easy adjustment."

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"In place - note that the clamp overlaps the scale providing a ready pointer for positioning accurately. Despite how the picture looks, the ruler face is flush with the front of the rat."
 

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This is a simple and elegant idea that can be quickly made. Its easy to add or remove from the 'Rat and will work with any fence that you may be using.

Tony has used his band saw to make the cut, I cut mine on the table saw with a carbide tipped blade designed for alloy.

Nice one Tony!

Thanks for allowing me to post it.


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