I decided to post this build I did to make a "One-Arm Bandit" or otherwise known as a "Cincinatii One-Arm". These plans are based off of Hern Berferd's plans that he posted on Gigposters.com.
So let's begin!
These are the raw materials I bought these on McMaster & Carr site, McMaster is awesome!
1 Deep Strut Channel, Slotted,2-7/16"x 1-5/8",zinc-plated Steel,3'length
1 Steel,1-1/2"square,6'length, Perforated Tubing For, Heavy Duty Telescoping-tube Framing, and
1 Steel,1-3/4" Square,4'l,perforated Tubing For, Heavy Duty Telescoping-tube Framing
I also purchased hardware from McMaster & Carr:
2 Tee connector plates
1 set of Connector fasteners, or bolt/nut/washer kit (item # 4931T334)
1 Locking Pin For 1-1/2" & 1-3/4" Square Tubing
The bearing system I purchase was from VXB.com
This strut fits larger wooden squeegees perfectly
This is how I mounted the perforated 6' bar to the linear bearing casters. I just used a piece of scrap hardwood, approx 1.5" thick (two boards).
Below is how the linear bearings affix to the board(s)
I needed to counter sink my bolts so they didn't rub on the bar rail
The image below shows that I needed some wriggle room for my bearings. If I tightened the bearings real tight, the system "grinded" and did not move freely on the bar. So I just loosened the bolts a little.
Below is the Tee connector hardware and how I attaches with the bolts supplied in the connector fasteners
One of the only heavy fabricating is drilling a 1/2" hole in the middle of the strut to accept the Tee Connector(s)
Using a bolt/washer/nut combo supplied from the Connecting Fasteners kit, I assembled the bar/squeegee gantry like this (the Connecting Fasteners kit is shown in the lower right in the plastic bag
Below is a shot of the perforated bar, spacer (approx 9" of 4"x4" wood), and the hardwood plate that's affixed to the bearings. I used a long 8" half-inch bolt for this. It's helpful to have a drill press to make sure you're drilling straight down. I did not
Here's another shot of the perforated bar, spacer and board from below. Note the counter sunk bolts.
Here's a pic (below) of the gantry slid onto the bar. Heavy metal here!
Featured below is a 1 3/4" perforated bar that slips over the six-foot 1.5" bar. I use a locking pin to make the addition quick. This feature is optional as I felt I needed a longer arm to pull with
Final shot of the gantry with the extender bar attached
Here is a video of the final build!
Reply with any comments/questions/suggestions!