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Using a hold-down with square dog holes

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Forum topic by luthierwnc posted 01-21-2016 06:45 PM 523 views 0 times favorited 5 replies Add to Favorites Watch
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luthierwnc

115 posts in 1238 days


01-21-2016 06:45 PM

Hi All,

I’m considering a project where I could see the advantage of using one or two hold-downs rather than clamping things to the edge of the top or using the dogs on the bench. I’m talking about traditional L-shaped steel units tapped into bench holes.

Trouble is: I’ve got all rectangular bench dog holes that are angled at 2 degrees towards the vise. I can’t see getting enough friction to make the thing stay put. I’d rather not drill new holes in the top.

Does anyone have ideas for the round peg in the square hole? Thanks, Skip


5 replies so far

View jdh122's profile

jdh122

879 posts in 2279 days


#1 posted 01-21-2016 06:58 PM

I bet that the hold fast would hold just fine in square holes, but over time they would likely deform the holes. This guy in another forum tried it and found it to work: http://www.ncwoodworker.net/forums/showthread.php?t=40730

-- Jeremy, in the Acadian forests

View HokieKen's profile

HokieKen

1744 posts in 600 days


#2 posted 01-21-2016 07:25 PM

Are your square dogs big enough to make a blank and drill a 3/4” hole through?

-- Kenny, SW VA, Go Hokies!!!

View Mark Kornell's profile

Mark Kornell

1061 posts in 1992 days


#3 posted 01-22-2016 04:20 AM

It would be pretty easy to.drill some 3/4” holes in the benchtop where you need them for optimal holdfast placement. Likely you want the stem of the holdfast set back from the front edge anyway.

-- Mark Kornell, Kornell Wood Design

View rwe2156's profile

rwe2156

2190 posts in 942 days


#4 posted 01-22-2016 12:33 PM

What Mark ^ said.

A couple strategically placed holes is probably all you need.

-- Everything is a prototype thats why its one of a kind!!

View luthierwnc's profile

luthierwnc

115 posts in 1238 days


#5 posted 01-25-2016 02:59 AM

Looks like some new holes. Thanks guys! sh

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