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Looking for 12 Inch F Style Bar Clamps

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Forum topic by MT_Stringer posted 09-23-2013 07:44 PM 584 views 0 times favorited 8 replies Add to Favorites Watch
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MT_Stringer

1886 posts in 1885 days


09-23-2013 07:44 PM

Topic tags/keywords: question

My work table has 7/8 inch holes drilled for bench dogs. I would like to find four clamps that I can insert up through the hole in the 2 inch thick top so I can clamp things in place.

What I am looking for is a clamp without the spring clutch. I have some of these and they are a pain to work with. The other requirement is the hole diameter (7/8 inch) the shaft must fit through.

If you have any that fit the criteria, I would like to hear from you. I plan to grind the end of the shaft off so the clamp can be pulled apart (and reassembled quickly)

Note: One option I have is to use pipe clamps with shorter lengths. That does work but I would prefer to use the bar clamp.

Thanks. Pictures and links are a plus.
Mike

-- Handcrafted by Mike Henderson - Channelview, Texas


8 replies so far

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Loren

7554 posts in 2302 days


#1 posted 09-23-2013 09:13 PM

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MT_Stringer

1886 posts in 1885 days


#2 posted 09-23-2013 10:13 PM

Dammit, Loren, that is a perfect cure for my ailment. Especially since I already have clamps I can dedicate to this modification.

Thank you very much.
Mike

-- Handcrafted by Mike Henderson - Channelview, Texas

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Loren

7554 posts in 2302 days


#3 posted 09-23-2013 10:20 PM

Let me know how it goes. I have a 3” thick table with a pattern
of 7/8” holes in it into which I drop pins made from pipe, but
I would like to try clamps as well.

-- http://lawoodworking.com

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MT_Stringer

1886 posts in 1885 days


#4 posted 09-23-2013 10:23 PM

Will do. I will post a pic or three when I get them modified.

-- Handcrafted by Mike Henderson - Channelview, Texas

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MT_Stringer

1886 posts in 1885 days


#5 posted 09-28-2013 03:47 PM

My clamps have been modified. Thanks go out to Loren for the suggestion.
Here are some pics. They are working as advertised. :-)

Note: I bought some large washers to support the bar under the table. If the pop rivets fail, I will switch them out to small bolts and lock washers.

Two of the clamps are the cheep Harbor Freight style. The chrome ones are Craftsman that my dad used back in the 70’s. They are similar in style and made with much better constructed,

-- Handcrafted by Mike Henderson - Channelview, Texas

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Dallas

2906 posts in 1141 days


#6 posted 09-28-2013 04:58 PM

MT_Stringer Maybe I’m a bit dense, but why the cross bar on the bottom?

-- Improvise.... Adapt...... Overcome!

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MT_Stringer

1886 posts in 1885 days


#7 posted 09-28-2013 05:12 PM

Dallas, my workbench is 2 inches thick. This lets me insert the clamp, pivot the cross bar and clamp away…out in the middle of the table.

-- Handcrafted by Mike Henderson - Channelview, Texas

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Dallas

2906 posts in 1141 days


#8 posted 09-28-2013 05:31 PM

Try to use it like a regular holdfast except put the shaft right up against the work piece, tap it with a hammer on the end and see if it will hold.
I have a a strip on an assembly table that is 1 1/2” thick where I added a chunk of 1” maple underneath. The holes are 13/16” and that seems to work well for me.

-- Improvise.... Adapt...... Overcome!

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