Scissors Lift Table

 I have wanted an adjustable table in my shop for years and got excited when I saw one of these on Facebook for $29.95. That was a scam of course, but then Steve DeVries brought one to our guild meeting in May and I watched a video ( many, many times) of one being built by Marius Hornberger and I followed his design with a few personal twists of my own.
 
 This lift is built almost entirely with high quality maple plywood and the nut block is some hardwood from my wood room and I can't identify it
 
The lift has 1 1/2" thick by 2 1/2" wide arms and 1 1/2"x 3" top and bottom frame members. All the bushings in the scissors and connecting block are DOM steel tubing and the pins are 1/2" steel. The threaded shaft that runs it up and down is a 3/4"-6 Acme thread and the casters are 4" 2-way locking type. The height range is from 17" to 57" and it takes 107 turns for the full 40" travel. I am going to make 1" 6 point socket driver for it to use on a drill.
 The bearings are 1 3/4" OD and 3/4" ID and fit over the 3/4" bushing sticking our of the scissors arms. In front of the nut that crank goes on is a 1 1/4" roller thrust bearing with a 1 3/4" bearing pressed into the inside of the top front frame member and it supports the shaft in the front. I have Delrin block in the top back member that supports the back end.
 
 This was design as you go project with a lot of visits back to Marius' video.
 
 All the wood is finished with Boiled linseed oil and may get some poly on it later. The top is a small laminate covered worksurface that had to be cut down to leave 1 1/2" overhang all the way around for clamping. 

Cheers, Jim