Self centering scribe

[Christophe Mineau]

Hi Rick,
here it is, after a hard day at work, I needed to change my mind so I passed the evening in the shop and here it is :






Thinking about it, I simplified the scribe by leaving only a 1 mm hole, just enough to pass the tip of a pencil.
Works great !
Thanks for the idea !

I have some step by step pictures, I will put an article on my site one day or the other, I will make reference to your original idea , Rick, of course !

Cheers,
Christophe

[Christophe Mineau]

Up up, what do you think ?

[Altair]

Very well executed Christophe! That's one beautiful scribe.

[rgsparber]

Christophe,

Brilliant improvement for use on wood! Nice job of machining too.

Congratulation!

Your website reveals more of your genius :-)

Rick

[DIYer]

Great execution, Christophe! Using brass makes that tool look really classy.

[kbalch]

This thread has been moved to the Must Read subforum. Congrats (and thanks) to Rick for making such a valuable contribution!

[Ralphxyz]

Nice idea but it seems like at best a approximation of the center line.

What if the scribe pin and edge guide pin are not exactly at 90° to the edge, which would be easy to happen?

Possible a flat edge instead of a round pin for the edge guide might help.

Nice idea thanks for posting.

Ralph

[rgsparber]

Nice idea but it seems like at best a approximation of the center line.

What if the scribe pin and edge guide pin are not exactly at 90° to the edge, which would be easy to happen?

Possible a flat edge instead of a round pin for the edge guide might help.

Nice idea thanks for posting.

Ralph

The flat would have to pivot as the distance between pins changed. Could be done. I use my tool a lot and usually scribe from both sides just to verify no surprises. The second scribe line has always fallen into the first line. Good enough for layout work.

Rick

[Ralphxyz]

Thanks for the reply Rick, yeah scribing from both sides would check your accuracy. Interesting project thanks for posting.

Ralph

[ranald]

Thanks Rick,
Iwas thinking small router-bit bearings might work.