I was able to pick up an unused bathroom cabinet with 3 drawers and 2 'under sink'doors. John raised it on 2 x 4's and put wheels on the botton so i can re-arrange and clean the room more easily. It's great.
Someone I know used those large grapefruit juice cans to raise a small use dining table she bought for her quilt space. works well for her.
Is there a large variance in cutting table heights? CAn they be adjusted? Not sure. Best to look in them... do a google.com search perhaps starting with JoAnn?
Best of luck... I KNOW back pain inimately.
JUlie