LumberJocks

Will be good for small stuff

  • Advertise with us
Project by stcin posted 1296 days ago 2108 views 3 times favorited 5 comments Add to Favorites Watch

Liked the looks of the Grrgripper. Did not want to spend $70 to $100. Looked around the shop. Found an old fence rider, an Incra jig that was not being used, a piece of sticky backed rubber, a block of cedar and an 1/8 plywood shim (one too many trips through the planer). Works great and all I spent time was time.





5 comments so far

View steliart's profile

steliart

1807 posts in 1325 days


#1 posted 1295 days ago

very interesting

-- Stelios L.A. Stavrinides: - I am not so rich to buy cheap tools, but... necessity is the mother of inventions - http://www.steliart.com --

View Mary Anne's profile

Mary Anne

1057 posts in 1845 days


#2 posted 1295 days ago

Great use of shop “extras”. This looks possibly be even safer than the Grrripper.

View parkerdude's profile

parkerdude

165 posts in 2088 days


#3 posted 1268 days ago

Hey stcin…
It looks like you have a couple of those Incra jigs. How old are they? I’ve got one that I bought about 25 years ago. I finally got a chance to set it up. I had a problem with 1/4” finger joints. I forgot to measure the diameter of the bit, it was about .008” undersized and made the joints too tight.

http://lumberjocks.com/projects/19083

Good luck, it really is a good fixture.

later,

-- dust control

View stcin's profile

stcin

29 posts in 1327 days


#4 posted 1267 days ago

Hi Parkerdude,
I have three of those jigs and probably got the first one twenty-five to thirty years ago. When I bought the first one I was also spending quite a bit of time fly-fishing. The learning curve was too steep for me to want to spend the time with it. Through the years the first jig multiplied through trades and bartering to three. I have one on the small parts jig, one mounted to a miter slider as a precision stop and one on the shelf waiting for inspiration. On the finger-joints, I haven’t cut any in a while but some box projects are on the horizon. Was it that the stock was .008 thicker than the bit diameter? How will you account for the difference next time?

View parkerdude's profile

parkerdude

165 posts in 2088 days


#5 posted 1267 days ago

Hi stcin,

It wasn’t the stock size but the bit was undersize by about .008”, the incra jig has 1/32” steps and with the bit being undersized each cut was progressively short by the .008”, (eg. .008 1st cut, .016” 2nd cut, .024 3rd cut, and so on). The result was that the joint was too tight. I could barely get one box to come together dry. I crushed that box trying to get the joints to close during glue-up.

My solution was to use a 1/2” shank straight cut .250” bit that actually measured .250”. The problem was a carbide .250” upcut spiral bit that started out as a .250” blank before the flutes were cut, resulting in the undersized final dimension.

The spiral bit made for a MUCH smoother cut, but I’ll have to get one cut from a 1/2” shank blank, so that the finished size will be exactly as advertized.

The Incra is still a great jig. Good luck with your projects!

later,

-- dust control

Have your say...

You must be signed in to post the comments.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com

Latest Projects | Latest Blog Entries | Latest Forum Topics

GardenTenders.com :: gardening showcase