I got a Planar PT-120 touchscreen monitor for a project to install a computer in my kitchen on an under-counter mount. Unfortunately, Planar did not make the PT-120 VESA compatible, while the mount I am using is VESA standard. I created an adapter plate using polycarbonate.
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Step 1: Cut Polycarbonate Sheets
I found these one foot square pieces of polycarbonate at Lowe's for just over a dollar. I picked up a cutting blade attachment for my Dremel which handled the cutting very nicely. Watch out for the shavings from the polycarbonate, so wear goggles when cutting
Step 2: Measure for Monitor Side
The monitor is backed by a steel casing under the rear cover. The head of the mounting screws that I used on the adapter have to extend into the casing, so a set of holes had to be bored to allow for that additional extension.
Step 3: Attach Polycarb to Monitor
Drilled out the Mounting points with the Dremel and constructed the polycarb sheets with the hardware. There are two load spreading sheets (one for the monitor and one for the mount) and two spacer sheets to reduce shear stress on the polycarb.
Step 4: Completed Construction
It's a quality mount, but it takes some doing to get the set screws to the right tension. I think we'll set the monitor to where we want it, and then tighten the screws down to keep it from sliding all over the place.