Tuesday 11 April 2023

“Picture and Collection Bar”

This is another one of those projects I found on Pinterest & decided to make a DIY implementation of. The original pin describes it as a “picture and collection bar”.

Essentially using a wooden strip to trap marbles in such a way that they have a little movement but due to the sloped design will always try to move downward and towards the wall.

This means that if you push a piece of paper through the gap at the bottom, there is enough movement for the marbles to get out of its way but they will immediately roll down, providing just enough friction to hold the paper – but not enough friction to prevent you from easily removing the paper again if you need to.

It’s kind of like an ultra slim pin board, but without having to put holes in your paper.

The original design I found used pretty thin strips that appear to be jointed it mitred angles.

Instead I opted for using a larger piece of oak, but then cutting out an angled gap for the marbles.

The cross section looks something like this:

The actual construction of this was very simple, just a series of rebate cuts on the table saw, occasionally making one of them angled, and making one very us at the bottom of the piece, so that when it’s up against the wall there is a slight gap as can be seen in the above diagram, which will allow paper to pass through.

Then I capped off the ends with a little piece of mahogany, to prevent the marbles from rolling out the sides – this is simply glued and pinned in place – and then finally some finishing.

As the piece of oak I was using was reclaimed and had a couple of screw holes, I patched one which looks a little bit like a knot in the wood, and the other two which were at the edges, I decided to patch using brass tacks, as the holes were in a position where if I were going to screw this to the wall I would have put holes anyway.

The tricky part of this project is mounting it to the wall. My design does not have a back piece because I did not want it to protrude too far from the wall. The downside of this means until it is on the wall, the marbles could fall out the back.

So, firstly, I filled the back with some marbles.

 I then used gaffer tape across the back of the marbles and the lower part of the bar – leaving the side top bit exposed as this is where the adhesive is going to go. I left enough excess gaffer tape to be able to fold it round so that there was a ‘handle’ hanging off the bottom of the bar.

Obviously the next step is to mark out a position on the wall to mount it, make sure that it is level, etc. Then apply the glue to the back of the bar, and stick it to the wall.

Once you’re confident that the glue set, you can put on the gaffer tape ‘handle’, to peel the tape away from the marbles on the back, releasing them.









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