|Project by woodbutcherbynight||posted 01-24-2016 10:21 PM||2085 views||2 times favorited||26 comments|
How much is a bump? For everyone this will be different. One thing is common, you don’t really know exactly how much so when you bump your fence it is a guess. Most times we have enough experience that this seems trivial. But when you need it to be exact how would you measure such a small distance? I wear a brace for my wrist so a bump with my brace on is greater than without. Who knew?
Borrowing from another woodworker I decided I had enough of guessing, and being wrong when I needed it the most. Digging through my toolbox I found a dial indicator that judging by the dust on the box had not been used in a long time. Cutting off part of the bracket I then made the wooden blank from some scrap and grabbed a magnet from my collection. Having used it for the past month I am impressed, it works as I saw in a video and you could be accurate down to the 10,000 ths if you wanted. Probably more than I will ever need but when cutting in a dado to odd width wood this has proven excellent in making a tight fit. The nice thing about this design is it can be used on the table saw, the bandsaw or just about any metal surface you wish to set up a cut. I even used it to measure run-out on a band saw blade I thought, and using this, proved had a bad weld.
While I used what I had in the shop this can be made for less than $20. Looking online I found dial indicators for $10, higher for better grade ones, and a fairly decent magnet can be found at most hardware stores for less than $5. Improvement in accuracy when you need it the most = priceless.
Enjoy and be inspired.
-- Live to tell the stories, they sound better that way.