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Looking for a pattern for hold down clamps

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Forum topic by Vrtigo1 posted 03-28-2011 at 07:40 PM 10265 views 11 times favorited 11 replies Add to Favorites Watch
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Vrtigo1

430 posts in 1629 days


03-28-2011 at 07:40 PM

Wondering if anyone has a pattern for a shop made hold down clamp similar to this commercial model from Rockler:

http://www.rockler.com/product.cfm?page=22010&filter=hold%20down

I figure I can probably come up with something but thought it would be easier if someone already did the leg work :)

Also, does anyone have any suggestions for sourcing T-track bolts locally? This is what I’m looking for:
http://www.rockler.com/product.cfm?page=1573&filter=t%20track%20bolt

I know I could order from Rockler, but figured it’d be worth it to save the $7 shipping cost on an $8 order if I could get them locally.


11 replies so far

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Viking

857 posts in 1832 days


#1 posted 03-28-2011 at 07:51 PM

Here is an idea for shop made;

http://lumberjocks.com/projects/30083

You can use standard 5/16 bolts in most T-tracks.

Good Luck!

-- Rick Gustafson - Lost Creek Ranch - Colorado County, Texas

View gfadvm's profile

gfadvm

10764 posts in 1327 days


#2 posted 03-28-2011 at 08:40 PM

T track bolts are toilet bolts available at any hardware/big box store.You can get 1/4 or 5/16 in various lengths.

-- " I'll try to be nicer, if you'll try to be smarter" gfadvm

View tommyd's profile

tommyd

77 posts in 1769 days


#3 posted 03-28-2011 at 09:57 PM

http://lumberjocks.com/projects/16919
check this out

-- Life is too short for negative drama & petty things. So laugh insanely, love truly and forgive quickly!  http://tomswoodshop.etsy.com

View woodworkerscott's profile

woodworkerscott

360 posts in 1451 days


#4 posted 03-28-2011 at 10:03 PM

Here’s a pattern I like:

I also use toilet bolts.
Hope this helps!

-- " 'woodworker'.....it's a good word, an honest word." - Sam Maloof

View drewnahant's profile

drewnahant

218 posts in 1726 days


#5 posted 03-28-2011 at 10:12 PM

here’s some I made recently
maple and cherry, bar made from 1/2” bolt, cut and ground flat with an angle grinder, then drilled

View rance's profile

rance

4130 posts in 1797 days


#6 posted 03-28-2011 at 10:16 PM

Drew, such a nice clamp. Doesn’t seem right to have a plastic knob. :)

-- Backer boards, stop blocks, build oversized, and never buy a hand plane--

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drewnahant

218 posts in 1726 days


#7 posted 03-28-2011 at 10:21 PM

rance, I need to make some wood knobs, but the woodcraft knobs were only a buck each, so I figured they would be a good temporary fix so I can use the clamps until I get around to making a bunch of knobs

View Don's profile

Don

10 posts in 1258 days


#8 posted 03-30-2011 at 12:42 PM

A Q&D (quick & dirty) solution is a piece of scrap hardwood: 1/2” x 1-1/2” x 6”. Drill a hole in the center for a T-bolt. Add 100 grit sandpaper to both ends with double-sticky carpet tape. To use the hold down, you will need a piece of stock under the free-end, to match the height of your work piece.

Not what you would call an elegant solution – but it’s easy to make when you need something quick. I made a couple for a dedicated jig and have since borrowed them for other temporary jigs!

Last, but not least, a tip for low cost knobs for your jigs – lawn mower replacement handle knobs. The bolt/thread size is 5/16”, and they generally cost less than $3 a pair.

-- Don

View Bertha's profile

Bertha

12951 posts in 1330 days


#9 posted 03-30-2011 at 12:54 PM

Drew, I know it probably had to be done but seeing that gorgeous clamp over laminate is causing my neurons to fire abnormally. I really like the look of the trapped tapped bar. Fantastic idea that took quite a bit of work. I have a deep respect for all shop made tools.

-- My dad and I built a 65 chev pick up.I killed trannys in that thing for some reason-Hog

View Vrtigo1's profile

Vrtigo1

430 posts in 1629 days


#10 posted 03-30-2011 at 03:09 PM

Thanks for the comments and suggestions. Don, have you actually sourced these lawnmower knobs locally or is that just an idea that you had? I ask because I had a similar idea and found that nobody sells them. I haven’t checked a lawnmower repair place, but I checked all the big box stores and struck out. The closest place I’ve found is woodcraft, but it’s an hour drive for me. Last time I was there I bought 10 of ‘em and only have 3 or 4 unused so I’ll probably reload next time I’m in the area.

View Jim Crockett (USN Retired)'s profile

Jim Crockett (USN Retired)

852 posts in 2370 days


#11 posted 03-30-2011 at 09:02 PM

Check out this link for shop-made hold downs.

Jim

-- A veteran is someone who, at one point in his/her life, wrote a blank check made payable to "The United States of America," for an amount of "up to and including his/her life".

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