Ore Bin – IV

Bin Floor
As I stated elsewhere the numbers shown are often ‘nominal’. This includes the individual board width .. I went with 12″ – 0.250″

Thickness : I show 0.042″. In O scale this is 2″ thick. Is this thick enough? Perhaps not. If you wanted to make it 3″ thick then change that to 0.063″ .. if 4″ then it would change to 0.083″. Changing the thickness will of course affect the heights of the walls and some of the timbers. That is why I keep using the term ‘nominal’.

Width : I show 3.688″. This is simply it ‘came to’ adding other dimensions – the width of the four frames and the three ore chutes. This means it can be wider .. but no narrower.

Height : Simply what is needed to bridge between the front and back walls. If the thickness is changed for the bin floor itself or the front and back walls this will obviously change.

One of the things that needs to be kept in mind is keeping everything aligned. Here, I used four clothespins to clamp the bin floor against the frame diagonals. In red I show the Bent Caps being used to lock the frame members in alignment.
Rear Wall and Nailing Strip height
The wall cap (in blue) fits over the top of the wall frame vertical timber. This gives us the height of the back wall (in green). Note that the bottom edge has a 45° bevel to fit against the bin floor – that needs to be taken into account. Also note that the top board is thinner than the others so it fits under the cap. The nailing strip shown in red then fits up against the back wall and flush against the underside of the cap and has it’s own 45° bevel to fit against the floor.

The Nailing Strips (in red) are 0.063″ x 0.167″ – full scale that’s 3″ x 8″. The Vertical Posts (in gold) for the wall framing is 0.167″ x 0.167″. This tucks the side walls in a bit.

Front Wall and Nailing Strip
In a similar way the front wall is built up to the wall cap and down to the chute openings. A short length of stripwood is installed vertically to fill in on the ends (Planking filler)

Side Wall Planking
A couple of 0.167″ sq. pieces of stripwood clamped in place at the top and bottom allows the side-wall planking to be glued in place correctly.
Side Wall Vertical Members
The four vertical timbers can now be glued in place. The tops are held in place and located by the notches in the cap. The lower end though are cut at a 45° to rest against the bin bottom slope. I think the best way will be to glue the cap in place first and then take time to fit the verticals in place .. carefully.
Remaining Nailing Strips
The nailing strips between the verticals are now added. Care needs to be taken here since there is a 45° bevel on either end of these boards.