Libertad 1925 by Valeriy V - Scale 1:100 - Spanish Type F Light Cruiser

[Valeriy V]

The control post is assembled, but for now it is without small parts.

[Valeriy V]

The control post platform is located on the foremast.

[Valeriy V]

Details of the foremast before and after installation on the forward superstructure.

[Jim Lad]

Beautiful metalwork, mate!

 

John

[wefalck]

I like this solid construction of metal-sheathing around a metal framework. I would have probably chickened out and built such things around a wooden core.

[Valeriy V]

Yes, I had that choice, but instead of wood, I was going to use plexiglass.

 

However, after thinking it over, I realized that making such a plexiglass dummy would take me much more time than soldering a brass frame.

[Dr PR]

Valeriy,

 

Beautiful work, as usual!

 

I like the all metal construction too. You have access to the inside surfaces and joints, and that lets you get a good strong solder joint. You can leave a bead of solder on the inside of the joint because it won't be visible from the outside.

 

Another problem has sometimes happened to me when I used a motor tool rotary wire brush to remove excess solder from the outside (visible) joints. I want to get clean sharp joints, but if I remove too much solder the joint is weakened and breaks easily. Leaving the solder bead on the inside keeps the joint strong.

 

Plexiglas (acrylic) probably wouldn't be a good choice if you are sheathing the core with soldered brass parts. Plexiglas melts easily, and who knows where it will flow. It could mess up the surfaces the brass should fit against.

 

It is good to see you are still well and working on the model!

[Valeriy V]

Hello everyone!
Today I'll share a method for making a semicircular brass profile. Perhaps this will be useful for someone building models.

 

The simplest way to create a semicircle is with a jewelry die. However, when the wire diameter increases beyond 1.5 mm, significant physical force or a special drawing mechanism is required.

 

I decided to make my life a little easier and made this drum.

[Valeriy V]

Then I wound it with 2 mm diameter wire and inserted the drum into the lathe. The length of wire that fit onto this drum was 2.3 m.

[Valeriy V]

After being sharpened with a cutter, the wire on the drum took on this appearance.

[Valeriy V]

After removing the wire from the drum and removing the manufacturing allowances, I obtained 2.1 m of the semicircular profile I needed.

I think that with a little modification to the drum, it could also be used to produce a square profile.

[wefalck]

Valeriy, that's actually a clever idea, that could be possibly adapated in the other direction as well, meaning to very small half-round profiles, say below 0.5 mm wire diametres. Perhaps the process could be aided by embedding the wire during winding into shellac. Once machined, the shellac can be easily dissolved in alcohol to free the profiles.

 

I have used a similar process in the past by cementing with shellac short sections of wire to a small aluminium block and then grinding away half of the thin wire. The drum method obviously would result in longer and probably more uniform profiles.

 

And yes, by repeating the process on four sides, one could probably produce miniature square and rectangular profiles from round wire - I recently purchased a small rolling mill for this, but these profiles would still have slightly rounded edges.

 

👍🏻

Edited 4 hours ago by wefalck

[Bedford]

Valeriy, that's one I'll file away for future reference, very clever

[Valeriy V]

59 minutes ago, wefalck said:

I recently purchased a small rolling mill for this, but these profiles would still have slightly rounded edges.

 

This is an interesting machine. I would like to see it.  

Can you show it?

[wefalck]

Have to take some pictures ... it is actually a small rolling mill from the jewellery trade to enlarge rings. It needs to be modified still to drive both rollers for the purpose of rolling wire.

[Valeriy V]

Yes, I understand you. Apparently, it's something like this machine.

On these rollers, the square that is produced is indeed far from ideal.

[Rik Thistle]

Valeriy,

 

Good ideas.

 

Richard

Edited 29 minutes ago by Rik Thistle