I am a model T owner but I now I need assistance for a different type of vehicle. Thanks in advance to anyone that can assist. I need some advise and assistance. I have a chrome plated cast bronze piece that is 60 years old. It is for the prow of a boat. The boat that it came off of was more blunt than the boat I want to use it for. In other words the piece is in the shape of a "V" and i need to tighten the "V" to fit a more narrow prow. Any suggestions on how to bend this piece to make it fit? The total distance of the bend will be less than 1" but it must be done to make it work. Cost is not an issue as I really want this piece to fit my boat. Can anyone help or provide information to make this happen? Thanks.
odds are you will break it castings just do not bend let alone one full inch cast is very brittle good luck bending if you are successful run out and by a lottery ticket also
Standard procedure for bending brass is to heat it orange and quench it in water. It will bend until it work hardens. I was told the procedure applies to cast brass pieces as well as extruded brass. It worked for me on a cast brass steering wheel spider. Best to get a few responses from folks before you try anything.
Make a tapered brass shim for each inner side of the "V". You'll need a milling machine or someone that has one.
Once the shims are fabricated and fitted, they can be soldered to the original piece.
Orange is too close to the melting temperature and will burn the tin out but you do need to take it to red and hold it there until saturated. Quenching is optional. It will make no difference in the annealing--It just allows you to handle the piece quicker. After annealing, you can set it up in a press with the necessary V forms and shape it. Do NOT try to bend it hot. Copper alloys are shaped cold. Depending on the size and thickness of the piece, you may need to anneal it multiple times to get that 1" if the bottom of the V is filled.
More details of the piece are necessary. Post some pictures of it with something to scale it to.
Just found my notes. You want to take it to at least 1100°F and hold it there for one hour per 1/4" of thickness. Do not exceed 1200°F. After the heating/soaking phase, you can quench or air cool. It makes no difference.
The plating will crack, will it not? It probably ought to be stripped first.
Let's go at this another way, modify your boat's planking trim. Add a tapered piece that matches the casting, and then tapers back down to the existing trim. OR instead of tapering down, you could put a reverse curve in the trim end too. If it's less than an inch, that's only 1/2" on each side, shouldn't raise any eyebrows once it's done, and for folks that never saw the boat before, they'd think it was built that way! And of course, now it is!
It might also be worth taking your question over to the wooden boat forum if you haven't already.
David what kind of boat? any picture? its a long shot but I have a few pieces laying around
I missed that it was plated. Yes, the chrome will discolor and crack and needs to be stripped. Same with the nickel. It won't hold up either.