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Making your own holdfast ...

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Forum topic by blackcherry posted 11-23-2012 02:01 AM 3999 views 0 times favorited 12 replies Add to Favorites Watch
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blackcherry

3186 posts in 2541 days


11-23-2012 02:01 AM

Topic tags/keywords: tip

Just read this online on how to convert a bar clamp to a holdfast for your work bench…http://woodworkingtips.com/etips/etip090100ws.html


12 replies so far

View FirehouseWoodworking's profile

FirehouseWoodworking

632 posts in 1992 days


#1 posted 11-23-2012 02:47 AM

Cool idea. Thanks for sharing.

Cheers!

-- Dave; Lansing, Kansas

View RussellAP's profile

RussellAP

2963 posts in 1005 days


#2 posted 11-23-2012 04:49 AM

That’s a great idea, you could do the same with round bar clamps too and you don’t have to drill, just put the end on and run it up tight.

-- A positive attitude will take you much further than positive thinking ever will.

View Roger's profile

Roger

15039 posts in 1522 days


#3 posted 11-23-2012 01:39 PM

Very slick. Thnx for the link

-- Roger from KY. Work/Play/Travel Safe. Kentuk55@bellsouth.net

View Beginningwoodworker's profile

Beginningwoodworker

13347 posts in 2391 days


#4 posted 11-23-2012 01:55 PM

Great idea.

-- CJIII Future cabinetmaker

View 489tad's profile

489tad

2443 posts in 1730 days


#5 posted 11-23-2012 04:35 PM

Good tip. A couple of my clamps have removalbe heads.

-- Dan, Naperville IL, I.G.N.

View hhhopks's profile

hhhopks

564 posts in 1096 days


#6 posted 11-23-2012 05:15 PM

So, why are good traditional holdfast so expensive?
It seems to be just a 1/2” bar bent in shape with bent tip pounded flat.

Anything special about the steel?

Can someone share some light on the difference?

Has anyone actually made their own traditional holdfast?

-- I'll be a woodworker when I grow up. HHHOPKS

View blackcherry's profile

blackcherry

3186 posts in 2541 days


#7 posted 11-23-2012 05:46 PM

It a long process to make using carbon to heat up the cold steel and plenty of pounding….

View Howie's profile

Howie

2656 posts in 1641 days


#8 posted 11-23-2012 11:08 PM

Looks good, think I better make a couple. Thanks for the tip.

-- Life is good.

View joek30296's profile

joek30296

35 posts in 1585 days


#9 posted 11-24-2012 12:14 AM

Well, if that ain’t the coolest idea I’ve seen in a while. Thanks for sharing.

-- "There are two theories to arguing with a woman....neither of them work"

View sedcokid's profile

sedcokid

2683 posts in 2317 days


#10 posted 11-24-2012 04:31 AM

Great…...Cool!!

Thanks for sharing

-- Chuck Emery, Michigan,

View Dave's profile

Dave

11193 posts in 1558 days


#11 posted 11-24-2012 09:38 PM

nice tip

-- Superdav "No matter where you go - there you are." http://chiselandforge.com

View jim_hanna's profile

jim_hanna

1 post in 277 days


#12 posted 02-18-2014 10:19 AM

I was intrigued by the idea of using a batten with a birdsmouth notch to hold a piece against a single dog for planing after seeing a video demo ( at link. It looked really effective at holding the stock for diagonal planing, yet the stock can be lifted and flipped over very quickly.
An essential for using the birdsmouth batten is some sort of holdfast to clamp it down to the bench.
The large solid metal holdfasts which you fix with a hammer are too pricey for me as is the Veritas Bench holddown with the screw tightening.

Also all of the above have long stems which stick down below the bench when holding thin stock, I don’t really want to lose my underbench shelving.

I found this design using an F clamp with the head removed and a swivel added to the end of the bar. Unfortunately any F clamps I have with a decent sized throat are much too big to go through my ¾ dog holes.

Then I found the Sjoberg QSh holdfast, it doesn’t protrude below the bench and looks a bit like an F clamp with the head removed and a kink in the stem to wedge it in the bench.

To make something like this I drilled out the pin on a large F clamp to remove the head, then drilled out another hole further up the shaft offset enough to give me a kink something like the catalogue holdfasts.
I used a 4” long ¾ UNF bolt as the stem to enter the bench. After knocking down the threads a bit the bolt is a good fit in my ¾ dog holes, it locks down the work solidly in my 2 ¾” thick pine bench, total cost very little.

My holddown made from the F clamp and ¾ bolt was so useful that I’ve made a second one. The washer on the bolt is just a repair washer drilled and filed out to ¾. It’s nothing to do with the wedging clamping action, it’s only there to stop the end of the clamp bar dinging the bench when I push the bolt into the dog hole (DAMHIKT)

-- Jim

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