Ok 1750GT - "correct clinching tools" for the brass rivets - I would be interested to see a pic of what they look like, a name to search for, and maybe a supplier.
Those rivets are used on things like heater valves too, and I've not seen them or the tool before.
Would you mind, please?
Nice work on the reflectors, by the way.
Well....initially I attempted to lathe out a tool on my mini lathe, but I could not machine the correct end form shape at all. I then came across two sources of a proper clinching punch needed to form over the brass tubular rivets....without this type of tool you can’t get the rivet to form properly.
One source is an e-bay seller whose store is called Mr.Lionel
. I believe I bought tool # ST350-9. Seems that these are used to form brass rivets on model trains sets....somewhere.
The other source was the Hanson Rivet Company
...however they were more expensive plus they did not reply to my e-mail inquiries whatsoever.
The rivets i purchased from e-bay seller arihavelectronincs
....you'll need a lot more than the minimum req'd ....I believe I bought a bag of 50. I practiced on set of broken light assemblies that I picked up on my journeys over the years... and these also came in handy for scavenging good parts from.
The end shape I could not reproduce on my mini lathe....but not for lack of trying...rather lack of proper cutters & skill.
One problem I encountered when forming these rivets is buckling or collapsing of the rivet at mid point. These rivets like the original are thin wall ...less than .010"...and since the plastic of the housing is rather week, it cannot support the rivet laterally during the peening operation. So I machined up a back-up tool with a stem that fits inside the diameter of the rivet.
This is the back-up tool in position...
After practicing a dozen or so times, you eventually get the right combination of weight and force required to form the rivet properly.