Feldbahnmodule with ship

[finescalerr]

Those nuts and bolts are just gorgeous. -- Russ

[fspg2]

Today there's just a small part to show again, or rather a very small part 

Above the lower storage door sits a guide pulley, mounted so that it turns in iron bearings on either side. It kept the load chain of the hoist above from rubbing against the brick arch when goods were lowered. On the original, however, the masonry behind the pulley has been extensively patched. The pulley was probably installed later, after the chain had already done noticeable damage to the brickwork.

Alter_Lagerschuppen_379 (fspg2)


Each of the two side bearings consists of four individual parts. I fitted them together and, in a mini vise, drilled two holes in each for the 0.4 mm shanks of the hex bolt imitations. Then I soldered everything together.

Alter_Lagerschuppen_381 (fspg2)


Alter_Lagerschuppen_382 (fspg2)


Alter_Lagerschuppen_380 (fspg2)


Tiny parts like these have an annoying habit of simply jumping off the tweezers. All you hear is a faint sound on the floor, and the search begins. On my OSB board, I spent a good hour with a flashlight looking for the second, fully soldered bearing block. The third time I searched the same corner, the part suddenly looked back at me cheekily.

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Next, I wanted to position the two bearing blocks in the brickwork. A Pertinax jig served as a drilling guide.

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I drilled three 1.0 mm holes 4.0 mm deep into the MDF brickwork and widened the slot with light rocking motions until the small rear extensions of the bearing blocks fit exactly.

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The guide pulley consists of two nested tubes bonded with Loctite 648 (2.0 mm outside diameter, 1.5 mm inside diameter). The inner tube protrudes 0.8 mm on each side and thus limits the lateral movement against the bearing blocks. A continuous 1.0 mm brass wire serves as the axle, on which the pulley can turn freely.

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Alter_Lagerschuppen_390 (fspg2)

[Bill Gill]

A very nicely done small part, Frithjof.

I share your annoyance of small parts taking flight. They can find interesting near or distant places to land.
When I remember, I spread an old sheet under my chair and work area. Sometimes it helps me find a tiny part on it with my eye. Once or more I found a part with my foot.

[finescalerr]

Frithjof, your metalwork is jewelry quality. -- Russ

[Stuart]

Your work is always impressive.

Stuart

[fspg2]

Thank you all for your approval!
@Russ
Many parts are indeed as tiny as jewelry... except that not all that glitters is gold 

I wanted to see what the lower gate looks like once installed.

To join the two gate leaf halves, I shortened round-head rivets (1.0 mm dia. x 6.0 mm) to a shank length of 3.5 mm.
For this, I first soldered a 3.0 mm x 3.0 mm square brass bar onto a 0.5 mm brass sheet and drilled vertical 1.0 mm holes into it. Then I inserted the six-millimeter rivets and trimmed them with a small side cutter. To get clean shank ends without ugly nicks from the cutter, I sanded everything flat on 1000-grit sandpaper.

Alter_Lagerschuppen_391 (fspg2)


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The shortened rivets got a quick acetone bath and were then blackened with a blackening solution.

The two gate elements must not come apart when moved, but they still need to be able to fold open! So I put a tiny drop of Loctite 648 on the underside. To keep capillary action from gluing the upper hinge strap as well, I moved both parts while it cured. They now move perfectly

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Click a picture to open the gallery, then click again inside the gallery to enlarge it!

Further weathering will follow later.

[Bill Gill]

Wonderful! And those doors can open and close!

[Barney]

Superb bit of master model engineering
Barney

[lab-dad]

Thank you for sharing.
Inspiration like this is what allowed me to dream big.
Mj