Center finder gauge - Steel Post and Pin

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Project by Mambrax posted 03-30-2015 02:12 AM 3444 views 12 times favorited 6 comments Add to Favorites Watch

Finally did it ! The mighty center finder! I took the approach of making the studs and pin out of steel. That was a lot harder that i thought it will be. The 3/8 steel rod is not easy to thread at all. The pin is threading them shaped on the drill press with a file for the pointy tip (that was easy and actually fun). The purpleheart has proven to be very unpleasant to work with, however it did thread ok. the Koa wood was easy to work with and relatively soft. Big disappointment in the $.95 brass insert : almost exploded in the hole and broke on the top. Overall all a big learning project, result is ok but “off” by about .007” due to bad threading on one rod. Next one will be better (i hope..) Cheers.

-- Let's do the best we can !

6 comments so far

View kiefer's profile


4873 posts in 2086 days

#1 posted 03-30-2015 04:06 AM

Turned out pretty good after all the issues you had .
For you next one you may want to try this one
I designed it because I got frustrated with the two pin one because before you get to the end of the board it slips off and have no line near the end .


-- Kiefer

View mafe's profile


11061 posts in 2508 days

#2 posted 03-30-2015 11:14 AM

Really fine work.
Learning is what this is all about, next time it will be spot on. ;-)
Best thoughts,

-- MAD F, the fanatical rhykenologist and vintage architect. Democraticwoodworking.

View splintergroup's profile


720 posts in 641 days

#3 posted 03-30-2015 09:40 PM

This is a very handy tool!

Just curious, why didn’t you make your guide post by cutting the head off of 3/8” bolts? I use 3/8” steel rod (actually center less ground rod) for various things and as you point out, it is a real pain to thread. I wouldn’t ever want to do it unless I had to…..

View NormG's profile


5424 posts in 2423 days

#4 posted 03-31-2015 12:37 AM

Great addition to your tool collection

-- Norman

View Mambrax's profile


138 posts in 910 days

#5 posted 03-31-2015 01:35 AM

thanks guy for the comments. I really dig the mix of metal and wood, a lot of different expertise there.
@Splintergroup : good question “what did possessed me to use still rod ” Answer : “honey, i don’t think you should buy more stuff for your projects, use what you have, please ” :-)

-- Let's do the best we can !

View splintergroup's profile


720 posts in 641 days

#6 posted 03-31-2015 01:32 PM



(She Who Must Be Obeyed)

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