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Topic Summary

Posted by: karlgalster
« on: 04 July 2010, 18:44:45 »

Most impressive Colin.
Robin
Posted by: Mark
« on: 04 July 2010, 15:39:29 »

Very nice, but I hope those turn buckles work or I will have to have a word with the Naviga judges :police:

I have some more pics to post, but I have been posted to China myself at the moment  ;D

Mark
Posted by: colin
« on: 04 July 2010, 14:57:35 »

been meaning to photo and post my etched blocks for quite sometime but keep forgetting to photograph the parts.

this weekend i remembered, so here they are.

in the photo;

on the far left/bottom are my turnbuckles

on the left is the large single block for the main loading/unloading boom

on the right is the small single block, will be used for all the dingies/whalers/gigs/launches (ships boats)

at the top and to the far right are the block once that have been folded into shape
Posted by: karlgalster
« on: 01 April 2010, 15:17:24 »

Colin & Mark - looks very impressive.
Robin
Posted by: colin
« on: 01 April 2010, 12:33:21 »

looks interesting.. ;)   ^^^ hope my etchings turn out just as good
Posted by: Mark
« on: 01 April 2010, 11:51:28 »

They have arrived ^^^

For a first attempt I am very pleased, see what you think!  :-\

Mark
Posted by: Mark
« on: 31 March 2010, 19:01:01 »

Yes, there were a few tweaks, but all in all it went quite smoothly.

Just nerve racking now waiting for it to appear.  :D
Posted by: colin
« on: 31 March 2010, 17:48:58 »

so the first attempt has been made, a few alterations on the thickness of the single drawn lines and then its Production time  ^^^

On the left of the photo is a single Block, white metal fitting No. G19, which needs to be folded and a roller placed in between the two oval sides.

On the right is a Turnbuckle..(Bottle Screw) white metal fitting No. E35

not forgetting that the Brass is 0.3mm thick, the single Block, when flattend out like in the photo, is a total of 10mm long, the actual size of the items can not really be appreciated in the photo.

hopefully they will be ready to show you in Dortmund.
Posted by: Mark
« on: 23 March 2010, 19:02:45 »

Broken down into hald etch/tags and solid.
Posted by: Mark
« on: 23 March 2010, 19:01:06 »

Well as usual work got in the way, but I have now finished the artwork. The company I am using has checked it all through and say it's ready to go. I have attached some pictures of the artwork and will post some of the etching when I get it back.
 
 
Mark
Posted by: Mark
« on: 09 February 2010, 09:42:47 »

I have had a chance to sit down and finish the drawings for all the etch components now and have dropped them into a frame.

I will move things around for the next few days until I am happy that everything is supported.

Mark
Posted by: colin
« on: 08 February 2010, 11:46:36 »

jup that matrass does look rather nice doesn't it... :)

about the costs, the film production is the expensive part, once that is done the parts can be reproduced again and again, at much lower costs, for example if i require the 120 parts a second time it will be about 8 pounds..
Posted by: karlgalster
« on: 05 February 2010, 18:29:40 »

Colin. Interesting web site. As you said a lot of material at 200:1 but of interest as a reference for Kriegsmarine builders. I did notice they have a nice100:1 Destroyer radar matrass that would look good on the DM Z37.

The costings you quote are quiet high but you get what you pay for.

Mark,
I like the "flattening" feature of your software. The d.i.y etching approach is very interesting also. It will be informative to see how you get on.


Robin
Posted by: Mark
« on: 05 February 2010, 08:05:52 »

I am a bit late in getting into this thread but here goes.

I have never done any etching myself, but have been reading up on it and learning rapidly as I go. The basics as I understand it so far and the route I have chosen to follow are;

1. Draw the part/s (For which I used 3D CAD, this allowed me to design the sheet metal then "Flat Pattern" it) see below.
2. Produce the negative for the photo etching, this is where I think I am doing something slightly different. I am planning on one sided etching through 0.2mm sheet. To get the 3D effect I am producing a double mask. 100% protection means the photo resist Will be exposed fully to allow the material to be burnt away completely. 50% protection means the photo resist will only be exposed for half the time which means the etching process will go much slower and not eat all the way through. I have not looked at double sided etching on my first experiment as I did not feel there were any parts I that I needed reverse detail on.

This is a far as I have got, but hopefully will soon have something ready for etching.

Mark
Posted by: colin
« on: 04 February 2010, 19:30:23 »

yes the very thin lines are a type of sprue that holds the items in place while etching and supports the items for transport, and of course cut off when you take the items out of the frame.

not only brass can be used, there are a few metal types that can be used but that is a matter for the person that is doing the etching.

as far as i know most etching can be done on metal that is 0.1mm to 0.5mm in thickness, the person that is doing my etching normally etches at a scale of 1:200 his website is only in German, look on the left side for Fotoatzteile 1:200      http://www.modellschlachtschiffe.de/shop/

when drawing lines, they have to be no thinner that the thickness of the metal, so if the metal is 0.2mm non of the single lines drawn can be thinner than 0.2mm, this only applies to a line that is on its own eg. the sprue lines.

the costs:
one of payment for the production of the negative (photo) film = between 10 and 40 pounds depending on the size of the negative (photo) film, a piece of paper size would in the region of 40 pounds.

for the etching anything from 3 to 20 pounds depending again on the size of the outer frame

for example the small blocks and the turnbuckles (total of 120 Items) will cost me about 30 pounds.