Planning my wall-hung frame, looking for opinions

After doing a bit of reading around here I have designed my frame to hang on the wall. I plan to have a 12’ motor width at 30" over the canvas. I will attach a drawing of my plans to this post. Do you have any thoughts or suggestions before I start doing permanent damage?

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I build my wall mount frame like I was building roofing rafters and attached them to to 12 ft ledger boards that were screwed into the wall studs. My top beam is steel uni-strut attached with angle iron corner braces screwed into the 2x4 frame. One of the disadvantages to doing this way is that you are married to the angle you cut your frame pieces at.

Other people have hinged their frames at the top to allow allow changing the angle or swinging the entire thing up against the ceiling to get it out of the way.

Also, I have to confess I ended up going back to a 10ft frame, after some home repair work, the frame was blocking access to a ruptured hot water tank, I still use the same frame layout, but I’m not using my maslow to cut full sheets and taking up the extra real estate and storage space in my garage was hard to justify. I cut without issue as long as I stay within a 4 ft x 6 ft envelope when cutting.

I’m currently building my frame and I really like the idea of a hinged frame as it makes the slope fully adjustable. The ideal frame angle still seems to up for debate and it’s nice to be able to play with whatever works for your setup

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it looks like the motors will be higher then 30" when I view the drawing. Remember the motors are about 4.5" above the top beam. so the actual air gap is more like 25.5" when using a 2x4.

What type of paintings you wanna hang ?

Good catch. I forgot to mention the important detail that the motors will be mounted to the underside of the top beam because I plan to use some 3d printed chain guides that are designed to be upside down. In my design I have the distance from the bottom of the top beam to the top of the canvas at 31” because I’m assuming the center of the sprocket will be roughly 1” lowers than what it is mounted to.

You say 4.5 inches above when using a 2x4 though, do you mean 3.5” for the width of the board and then another 1” for the same reason I mentioned?

Why must (?) the motors be over the beam and not in front oder under?

perhaps it is easier to keep the motors on the beam with screws if they are on top? If you weld motor brackets on your beam, it probably doesn’t matter. You could mount the motors on the end of the beam if you wanted, but the force of holding the sled is compressive on the top of the beam with the screws just keeping alignment. From the bottom the screws are holding all the weight and it is more likely to fail in that configuration - in my opinion and that may be incorrect-.

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use some long 3" screws or a drill a hole and bolt the motor brackets to the wood. I wouldn’t trust those 1" long dry wall screws taht come with some kits if you are mounting the motors under the top beam.

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