10-Minute Tech: No-Fail Support Block

Jack Support
Illustration by William Tipton

I noticed that my neighbor’s A-frame jack had sunk into the asphalt driveway because the wood had failed. I made a support block from layers of 2×4-inch lumber, screwed and glued together. I finished with a 4-inch-round steel electrical plate cover. The A-frame jack now sits on the plate and is very secure. It has worked well, both at home and away. I hope this idea will help other RVers so they won’t have to deal with broken boards or sunken A-frame jack supports.
J. Kaner | Anchorage, Alaska




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