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Old 12-21-2013, 09:02 PM
Overlander Overlander is offline
Join Date: May 2011
Location: Westminster, CO
Posts: 209
Default How do you solve this common problem!?

I'm building a tire carrier for my 80 - this is where I'm having the problem, though I have to say, this kind of thing comes up for me often in other projects as well.

Say I have a set of holes on the existing frame - and I need to put new plate over the holes - I'd like to drill a new set of holes through the new plate in such a way that they align with the existing holes already in place.

So the problem starts when I place the new piece of metal over the existing holes, essentially covering them up - there must be a trick on how to get new holes alined perfectly with the holes behind the piece you're trying to install...

This is assuming you can't get in from the inside and mark the holes from the back - that would be easy....

Hope that makes sense - if not, here is the photo. I'd like to bolt a steel plate between the frame and that protruding arm in the photo and then weld the tube onto the plate:
James DePaul
'95 FZJ80 with Lockers; 12,500lb winch up front. Home made sliders - and it shows... 285 DuraTracs; Seat covers, CB radio
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Old 12-21-2013, 09:22 PM
BritKLR BritKLR is offline
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Join Date: Oct 2012
Location: ATC HQ - Nederland, Colo.
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I've had good luck making a cardboard template of the metal plate then placing the template against where you want to drill. Punch a hole through the template and then transfer the template to your metal plate and mark the hole.

Good luck on your project!
Paul Carrill
Adventure Tool Company LLC



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Old 12-21-2013, 09:30 PM
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nuclearlemon nuclearlemon is offline
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Join Date: Aug 2005
Location: denver
Posts: 6,552

a ring of grease around the holes, put the plate on it flat and the grease transfers.
ige tlca #1431
62 fj40
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Old 12-21-2013, 09:57 PM
Brucker Brucker is offline
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Join Date: Jul 2013
Location: Longmont, CO
Posts: 436

Why not just use a tape measure? Can't you just figure out bolt hole pattern and then just lay it out on the new piece? Like in the photo, it shows a 4 hole square bolt hole pattern. So you would just measure the distance of center of hole to center of hole (usually easier to measure front side of hole to front side of hole or back side to backside). Doing this to each set of holes (side to side, top to bottom and diagonally). Then measure the whole area to see what size of plate will work. Then figure out where in the area the bolt hole pattern is and all that is left is laying out the measurements onto your plate. Then you center punch the spots you want to drill and then drill.

Does this make sense?

Edit: For non blind thru holes you can always use transfer punches...
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Old 12-22-2013, 12:07 AM
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baja1d baja1d is offline
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Join Date: May 2010
Location: Littleton, CO
Posts: 2,387

Piece of paper over the holes and then use a pencil to transfer the pattern- you know, like you use to do when you were a kid with a quarter
Travis Hurley– Owner/ C.E.O.
Outer Limit Supply | Main: 720-987-4202
Est. 2014 | Littleton, Colorado
www.outerlimitsupply.com | travis@outerlimitsupply.com
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Old 12-22-2013, 09:22 AM
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Rezarf Rezarf is offline
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I do what Ige said but use lipstick and it cleans up easy.
Rezarf <><
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Old 12-22-2013, 01:33 PM
SteveH SteveH is offline
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Join Date: Aug 2006
Location: Colo Springs
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If you're doing this to an FJ55 - is that putting lipstick on a Pig?
Steve H. - KE0KNH
Colo Springs, CO
'78 FJ40, '89 FJ62, '98 4Runner
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