- Joined
- Oct 31, 2016
- Messages
- 2,649
Just spent 5 days at the boat working on stuff. Back home for 10 days before going back to the boat. I would like to at least get started on this project before going back to the boat.
The sheave for a toe rail block that I got from a friend is cracked in half. Amazing what corrosion can do. I am pretty sure that the other sheave will break when I press out the center bronze and stainless steel bushings. Any thoughts on what I could soak this sheave in to loosen up the corrosion?
I believe I have 4 options of what to make the replacements out of. The current sheave is aluminum. Probably 6061. A replacement made out of aluminum would need to be anodized or have some type of noncorrosive protective coating. Don't know if this is possible in a home shop.
Second option would be bronze. No protective coating needed. The bronze is probably expensive.
Third would would be some type of plastic. These sheaves can come under significant load depending on how the line runs through the sheave. Any suggestions on what type of plastic might work in this situation? Lots of sheaves are made out of bronze and plastic.
Fourth would be casting a sheave out of polyester resin and fiberglass cloth. Sheaves used to be made this way and they have a name. I don't remember it off of the top of my head. I would need to make a mold for this.
Looking for suggestions on what material to use. Once I decide on the material we can explore how to make the sheaves.
The sheave for a toe rail block that I got from a friend is cracked in half. Amazing what corrosion can do. I am pretty sure that the other sheave will break when I press out the center bronze and stainless steel bushings. Any thoughts on what I could soak this sheave in to loosen up the corrosion?
I believe I have 4 options of what to make the replacements out of. The current sheave is aluminum. Probably 6061. A replacement made out of aluminum would need to be anodized or have some type of noncorrosive protective coating. Don't know if this is possible in a home shop.
Second option would be bronze. No protective coating needed. The bronze is probably expensive.
Third would would be some type of plastic. These sheaves can come under significant load depending on how the line runs through the sheave. Any suggestions on what type of plastic might work in this situation? Lots of sheaves are made out of bronze and plastic.
Fourth would be casting a sheave out of polyester resin and fiberglass cloth. Sheaves used to be made this way and they have a name. I don't remember it off of the top of my head. I would need to make a mold for this.
Looking for suggestions on what material to use. Once I decide on the material we can explore how to make the sheaves.