LumberJocks

How to go about clamping large pieces?

  • Advertise with us

« back to Woodworking Skill Share forum

Forum topic by botanist posted 01-31-2013 06:45 PM 1416 views 0 times favorited 8 replies Add to Favorites Watch
View botanist's profile

botanist

152 posts in 2291 days


01-31-2013 06:45 PM

In designing my new bed, I came across a conundrum about clamping large pieces, namely the headboard and footboard. I could get pipes long enough to span the distance, or I could use long strap clamps. How would you clamp long (or wide) pieces and what potential problems could I face if I used either one of my ideas?


8 replies so far

View Cosmicsniper's profile

Cosmicsniper

2199 posts in 1911 days


#1 posted 01-31-2013 06:58 PM

This doesn’t help, but I’d bolt rails to footboards and headboards. You’d never get it out of the house otherwise. You can use glued on cleats to bolt into.

Alternatively, a design that incorporates sliding dovetails (or other) for those joints would be kinda cool.

-- jay, www.allaboutastro.com

View HorizontalMike's profile

HorizontalMike

6968 posts in 1667 days


#2 posted 01-31-2013 07:22 PM

I like Jay’s idea about sliding dovetails with wedges. They work great. I did this on my workbench and they really stay snug. If you look at my workbench and visualize just/only the bottom rail being a bed frame holding both ends together, WITHOUT the top, you will get the idea, especially if you used a wider rail.

-- HorizontalMike -- "Woodpeckers understand..."

View derosa's profile

derosa

1557 posts in 1589 days


#3 posted 01-31-2013 07:22 PM

My plan is to nail down a couple of sturdy boards to the floor, both as long as the height of the headboard and spaced an inch or two wider than the length of the headboard. So when it comes time to clamp I can lay the headboard on the floor against one board and tap wedges between the headboard and the second board basically compressing the headboard between the two boards. I can then use standard bar clamps to clamp the top and bottom of the headboard.
I’m not certain strap clamps are the answer as I don’t believe they are strong enough. Bar clamps will work, just make sure to alternate top and bottom and you may need to a board under the pipes about midway across to counter the flex the pipes might experience if it is a king sized headboard. If king sized buy extra clamp pieces and when you’re done you can cut the pipe down for extra clamps, if queen sized stick the clamps out of the way when done as you may need a set that long sometime down the road.

-- --Rev. Russ in NY-- A posse ad esse

View chrisstef's profile

chrisstef

11479 posts in 1759 days


#4 posted 01-31-2013 07:30 PM

I was watching rough cut last night and Tommy was making a bed and had to deal with this exact problem. His idea was pretty slick. He took a wooden clamp and cranked it down across the back stretche and inserted his tenon into the mortise. From there he took 2 more clamps and using the wooden clamp he ran the 2 clampsoff the wooden one to the post pulling it tight. Im going to see if i can find some pics.

-- "there aren’t many hand tools as awe-inspiring as the #8 jointer. I mean, it just reeks of cast iron heft and hubris" - Smitty

View bondogaposis's profile

bondogaposis

2760 posts in 1104 days


#5 posted 01-31-2013 07:36 PM

If you have some pipe clamps you can make them longer w/ a pipe coupler, making 2 clamps into one double long clamp. When the bed is finished you remove the coupler and put them back to the way they were.

-- Bondo Gaposis

View Cosmicsniper's profile

Cosmicsniper

2199 posts in 1911 days


#6 posted 01-31-2013 08:05 PM

In general, you can use parallel clamps or pipe clamps, two per side, which pull on each other and double their effective lengths. For something extra long, you just need a helper to help set them.

-- jay, www.allaboutastro.com

View BinghamtonEd's profile

BinghamtonEd

1593 posts in 1122 days


#7 posted 01-31-2013 09:08 PM

I’m with chrisstef. That episode came right to mind when I read your post. I think Tommy Mac’s way would be the quickest/easiest.

-- - The mightiest oak in the forest is just a little nut that held its ground.

View pintodeluxe's profile

pintodeluxe

3570 posts in 1566 days


#8 posted 01-31-2013 09:27 PM

1+ bondos comment. Two 4’ pipe clamps coupled together will work for a headboard.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com

Latest Projects | Latest Blog Entries | Latest Forum Topics

GardenTenders.com :: gardening showcase