Samenvatting van het onderstaande: nieuw stappenplan, nieuw onderdeel voor de loop (injectienaald, dank aan Marc voor het idee), extra onderdeel (afvuurmechanisme, #24), nieuwe tekeningen.
Voor de geïnteresseerden heb ik de oorspronkelijke Engelse teksten bij de foto's laten staan. Heb je ergens een vraag over, schroom niet hem te stellen! Voor een toelichting waarom ik dit topic in het Engels schrijf, zie hier.
201. Turned out I wasn't satisfied with the way the guns looked. Modelers who know me are aware that I sometimes take things apart again and retry. In this case, the barrels were slightly tilted while they shouldn't be (though nicely aligned relatively to each other), aft end of the barrels took a lot of time carving and the end results were not spectacular (thought that wasn't so important as they'd have been largely covered up, but still..), the barrels each had slightly different heights... and also the base was too flexible (plasticard). All in all I just didn't like it. So I took off the barrels.
202. I spent hours and hours trying to figure out what would be the best way to add a piece of 0,6mm. copper wire to the Pontos 0,6mm. (at its widest) barrel. Glues were tested, soldering was tested... (actually the soldering had a pretty good result and I was going to use it... but... ) in the end I got a really good advice: try an injection needle. And indeed they are featured in 0,6mm. diameter. Cool! Was already planning to go purchase a copper tube 0,6mm. (Albion Alloys produces them) but the injection needles work and save money on price and gasoline. 12 needles for about 1 pound... nice deal. What can I say.. if you are ever in a situation in which you intend to connect a Pontos brass barrel to an extension, visit your local pharmacy.
Unfortunately the needle hole cannot be drilled (at least not by hand and I don't have the appropriate drill bit for my power tool) but when putting Pontos' barrel in the multitool the 'male connection point' can be easily filed to fit the needle. I'll show that in a video later.
This is the result (don't pay attention to the broken off Pontos barrel, I have a couple of spares):
203. The problem with glueing two pieces of copper wire (or brass & copper) together is that they break off fairly easy... it's not a strong connection. Using the needle radically changes this, as can be seen in this vid:
https://flic.kr/p/wakP7y
I used Medium Zap here (the green bottle). I'm amazed by the strength of this connection. No way is there ever going to be so much pressure on this barrel, but it's good to know it would hold.
204. Cutting away most of the plastic Zvezda part (in the end only using the base) calls for a longer recoil spring box to be made. I'll use 0,4mm. copper wire for that. Problem with copper wire is that it bends so easily (this also being an advantage, often!). There's a very easy way to straighten it, if you have the right tool: see
this video. It's really a matter of
5 seconds before the copper wire will be (almost) perfectly straight. The demonstration is done on some 0,6mm. copper wire, but the method applies to any thickness. Listen to the sound... you can actually
hear the straightening process going on.
205. Making sure, after so much testing, I still have enough raw materials to start this job! 24 cannons needed, still available: 24 (!) plastic parts, 27 turned barrels. Good, now let's hope I don't make any mistakes. Knowing my frequent charming mistakes, that sure needs to be a strong hope...
By the way I taped all these small parts to some tape on the used plasticard base.
206. Revised plan. In this plan I make reference to parts as seen in my drawing, hereunder. Although references are made until part '24', there are only 22 different parts in one cannon: there's no '1' or '2'.
SECTION 1: BASE
1a. Cut off barrel aft (part '22').
1b. File barrel male connector (part '21').
1c. Glue barrel parts together (part '21' and part '22').
2a. Make, file and straighten recoil spring box (part '23').
2b. Glue recoil spring box to barrel.
3a. Chop off top half of plastic (part '20').
3b. File recess for recoil spring box from square plastic strip (part '25').
3c. Cut off square plastic strip (part '25').
4a. Drill holes in aluminum base.
4b. Glue plastic base ('25') into aluminum base, using fin as reference for front/aft.
4c. Glue part '25' to base.
4c. Glue barrel to '25'.
4d. Remove fin from base (part '20).
SECTION 2: RECOIL SHIELDS
3. Add recoil spring box underneath barrel.
4a. Left side gun recoil shield: cut.
4b. Left side gun recoil shield: curve and add.
5a. Right side gun recoil shield: cut rectangle (see #163).
5b. Curve rectangle and add to gun (see #163-#166).
SECTION 3: SIDE EXTENSIONS
6. Make training rack using 'eyebrow method' and add.
7a. Cut left side rectangle (#168 ).
7b. Fold left side rectangle (Z-structure) and add (#168 ).
8a. Cut U-structure right side.
8b. Fold U-structure right side (#172).
8c. Cut and bend photoetched layer wheel right side.
8d. Add layer wheel.
SECTION 4: WIRING
9. Add left side layer's shoulder rest (copper wire).
10. Add right side trainer's shoulder rest (copper wire).
11. Add 2,26mm. copper wire (rod) to right side.
12a. Add part 1 wiring to gun (starting left back side). (See #175)
12b. Add part 2 wiring to gun.
SECTION 5: SIGHTING GEAR
13a. Cut to shape photo etch sighting gear standard (see #157).
13b. Bend photo etch sighting gear standard (see #157).
13c. Using a jig like in #158, add two sighting gears made from copper wire.
13d. Add sighting gear to gun.
14. Make and add sighting gear wheel (see #159).
SECTION 6: ELEVATION
DEPENDING ON 12 POUNDER GUN POSITION ON THE SHIP, EITHER MAKE LEFT SIDE 12 INCH GUN CONNECTION (VERSION B ), OR MAKE VERSION A:
15a. Cut rod for left side elevator wheel.
15b. Bend photoetched elevator wheel.
15c. Glue rod to elevator wheel.
15d. Add elevator wheel to Z-structure.
207. Here's the updated drawing, having been added parts '20'-'24'. For a detailed look, click the picture and in Flickr choose 'original size' or 'large size'.
208. The several parts and their positions, schematically:
Let the works begin once more!!
Spent time thus far: 151 h.