Pegasus by hdrinker - 1:48 - POF - Swan practicum

[Pirate adam]

Looks amazing!

 

Adam

[hdrinker]

Third go at Perseus. Each one a little better than the last. 

[hdrinker]

The stern complete. The wing!! Not broken yet.

[hdrinker]

The swivel guns took about a month. After I mounted those on the quarter deck, I realized I was one short for the fore deck! Been counting constantly, just to make sure they were all there. So, of course, one is missing. Looked everywhere. Anyway, making one more shouldn’t be a major deal. Just beating my head!! Also, one of my LED leads broke off where it exits on the bottom of the keel. No slack. Oh well. I might cut a section out of the keel to retrieve the end of that lead. Haven’t decided.

Henry

[hdrinker]

Remaining swivel guns, rails, safety ropes. Deadeyes and stern light next. Can someone tell me what the large beam mounted across the foredeck and protruding well off the starboard side was for?

Henry

[druxey]

Are you referring to the fish davit? It can be mounted port or starboard as required. See TFFM, 12.7 to 12.9.

[hdrinker]

Yes. Overlooked the section in vol 2. What does it mean when my blackened pieces, even after 2  drippings in Birchwood Casey Brass Black, when dried, leave spots of copper looking metal when gently rubbed?????

Henry

[hdrinker]

It’s like the patina rubs off. I’ve tried cleaning again with Acetone and dipping a third time, but that doesn’t seem to really solve the problem., Any thoughts?

[Kevin Kenny]

Hi Henry

i use Jax pewter black and had the same issue as I applied it full strength. Then someone commented that I needed to dilute it with 50% water and it retained the blackness much better. It never made sense to me but it worked better when diluted . Having said that I just took them out and they are no longer as black as I remember so hopefully some experienced person will respond. 

[dvm27]

I use a 1:5 dilution. None of my blackened fittings have faded over time and I don't get the flaking and uneven coatings I used to get when I used stronger solutions. I can't stress enough that the fitting needs to be spotlessly clean and free from oils so I wear disposable gloves. I do suspect that some of the results depend on the specific type of brass you are using. Being an alloy, perhaps the proportions of copper and zinc vary based on the type of brass. I do note that since I have been using Sparex before etching my results are much more consistent.

 

I've never used Pewter black for brass Kenny. I've always used brass black. Not sure what the difference is though.

[druxey]

Different chemicals are involved for blackening pewter than for brass/copper.  For pewter selenious acid, for copper or brass one of several sulphur compounds.

 

Diluting the solution slows the chemical reaction and produces a thinner and more stable surface layer.

[hdrinker]

Thanks for that discussion. I will try Sparex after soldering before blackening and cut the Brass Black with water at 1:5 and report. Is the Sparex suitable for degreasing such that the pickled piece can go directly into the blackening solution, or is it best to rinse with water or acetone first?

HD