I am designing something which requires me to adjust two blocks. I just realized how hard this will be to explain with no photos.

Please visualize a rectangle 6'' by 2''.

N
W--------------------------------------E
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W--------------------------------------E
S
The two blocks are bolted together. They need not be perfectly flat, on their facing surfaces, if someone has a brainwave.

I have seen something similar on my mountain bikes.
I need to be able to adjust the thickness of the west end, as compared to the east end. I have seen a washer that is thicker on one side than the other. I am picturing some sort of nut, which I can turn individually on the east side or the west side, to alter the thickness of that side. Maybe there could be a space between them, which could take up East or West thickness a little each way.

Thank you.

2. After I posted I noticed the two parallel bars are to one end. They should be spaced out more, each one closer to E or W.

3. Clarification needed...

I am not quite sure if your design concept requires each end of the block to be raised individually, or both opposing surfaces of the blocks (once raised)need to be parallel to each other.

4. I am home from my camp job, so I have my own computer here.
http://www.flickr.com/photos/7327115@N03/4161711340/
I have never posted photos before, so please forgive me if there is a jump. The two adjustable nuts are turned to move A > A' , or one could make A < A' by turning the adjustable nuts down on one end, and up on the other. I also envisioned a sliding wedge idea, one wedge for both east and west, but that involves having machining done. Much cheaper to buy something off the shelf. Of course there would be a locking bolt or two, probably in the center, once the sides were where you wanted them.

Thanks.

• Lets try again....

From your sketch, it appears that your intent is to have each end individually adjusted, right? If so, that obviously would require two threaded studs mounted in the base block and two nuts; and/or just two BOLTS w/hex head, or…(if the block is thick enough for thread tapping) which can be individually adjusted to meet blocks’ separation requirements.

Hope it helps!

• Just thread one of the blocks, and mount a threaded stud in each. Then have a nut which turns up or down.

The second block has holes large enough to accommodate the stud turning slightly. This makes perfect sense and also sounds pretty easy. Let me just write that down before I forget.

• Buy or borrow one of these and study the construction.

http://www.bettymills.com/shop/produ...ntent=Facility

Gene

• You can buy those for woodwork under the brand Jorgensen Clamp. The key to it is a round nut with a threaded hole through it. A hex cap bolt running through would make it look professional and slick. The only machining would be drilling a few holes. Do you guys know a supplier for that sort of round nut?

Seems like that's the benefit of experience-- the simplest way to solve a problem. I sure appreciate it. You should see some of the crazy complicated drawings I have come up with.