Adding Mass to SB table

[dogfuel]

Has anyone tried
(or even thought through) adding several hundred pounds to theit table (most crudely, just sandbags hanging from the table rails???)?

I feel slight vibrations from the table when cutting and it occured to me this might help.

Any thoughts?

[mrdovey]

Joe...

When does your table vibrate? While you are/aren't cutting, stationary/moving/jogging? If only during move/jog, at what feed rate?

...Morris

[gerald_d]

Joe, there will be no difference in horizontal vibrations if you suspend mass from the rails. If your suspension rope/bag is slightly elastic, then there will be little difference in vertical vibrations as well.

However, if you attach the mass rigidly to the table, as in bolting to hard concrete, you will reduce higher-frequency table vibrations. But you may amplify low-frequency "jello" type oscillations.

Some guys have made their table legs of concrete.

[bjenkins]

Joe,

A simple thing to try is something that others do as a matter of convenience-- store several sheets of MDF on the cross-bars near the floor. 10 sheets of MDF is about 900 pounds. Gearald is right-- clamp it on or you won't get much value. Other stock is lighter, but there is room for a lot of sheets under there and it solves a storage problem for me.

[gerald_d]

Before adding weight, add two 45 degree braces/struts/gussets/brackets at each leg. Looking from the top down onto the leg, the two braces lie at 90 degrees to each other - one brace goes to the cross-member (in the y-direction - where you want to pack your boards), the other brace goes to the end of the x-rail.

8 bits of angle iron, each about 1.5x1.5x0.25 inch cross-section, about 24 inches long, with a single 1/2" bolt at each end, will make a huge difference to the table. (This is far better than triangular gusset plates of the same mass)