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(Topic ID: 156236)

Not enough clearance for rivet die to reach rivet--how to proceed?


By ForceFlow

4 years ago



Topic Stats

  • 18 posts
  • 10 Pinsiders participating
  • Latest reply 4 years ago by ForceFlow
  • Topic is favorited by 1 Pinsider

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#1 4 years ago

I have a flipper assembly with a nylon bushing that needs to be riveted to the bracket.

Unfortunately, there is not enough space between the tube in the bushing and the rivet for the die to fit and press down on the rivet.

I was using this tool: ebay.com link
And 1/8" die: ebay.com link

I tried a pop rivet, but had no luck there either, since the pop riveter wasn't able to get close enough to make the pop rivet tight.

So--any suggestions as to how I might be able to proceed with this?

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#2 4 years ago

Remove the aluminum ferrule around the die. Shouldn't be needed.

#3 4 years ago

If you do a good amount of riveting and restore work, you've gotta get this from Pinrestore:

http://www.pinrestore.com/Riveting.html

I have the rivet press and a long die for getting in those hard to reach spots beneath ramps. For this--since you're working with metal--I take the bottom die and plug it into a drilled out piece of wood. I place the rivet head on it, then place the other die over the top and tap with a hammer until the rivet is installed snugly.

You can't do that with plastic, but it looks like a good solution in your case.

#4 4 years ago
Quoted from beelzeboob:

If you do a good amount of riveting and restore work, you've gotta get this from Pinrestore:
http://www.pinrestore.com/Riveting.html
I have the rivet press and a long die for getting in those hard to reach spots beneath ramps. For this--since you're working with metal--I take the bottom die and plug it into a drilled out piece of wood. I place the rivet head on it, then place the other die over the top and tap with a hammer until the rivet is installed snugly.
You can't do that with plastic, but it looks like a good solution in your case.

What is the diameter of the pinrestore die?

#5 4 years ago
Quoted from ForceFlow:

What is the diameter of the pinrestore die?

1/8"

Judging from the photo, it looks like it would work for your situation.

#6 4 years ago
Quoted from gweempose:

1/8"
Judging from the photo, it looks like it would work for your situation.

I was asking about the outside diameter of the die--not the size of the rivet that it will punch. Since the rivet is 1/8", I'm pretty sure the actual die is larger than that in order to accommodate the rivet.

There is only a gap of 5/32" between the bushing and the center of the rivet, so the outside diameter of the die would have to be 5/16" (0.3125") or less in order to be centered on the rivet.

#7 4 years ago
Quoted from ForceFlow:

I have a flipper assembly with a nylon bushing that needs to be riveted to the bracket.

why? why not a nut and bolt instead?

#8 4 years ago
Quoted from wiredoug:

why? why not a nut and bolt instead?

Then there's a gap between the bracket and the underside of the playfield. That in turn lowers the bushing on the top side of the playfield, reducing or eliminating the gap between the bottom of the flipper and the playfield.

#9 4 years ago

Just cinch it with a transfer punch.

#10 4 years ago
Quoted from roc-noc:

Remove the aluminum ferrule around the die. Shouldn't be needed.

If I understand this as grind/ modify/ improve the die shown back sufficiently to get it to work. I agree and that is what I did with this type of die to access multi product motor 3/16" rivets.

#11 4 years ago
Quoted from ForceFlow:

I was asking about the outside diameter of the die--not the size of the rivet that it will punch. Since the rivet is 1/8", I'm pretty sure the actual die is larger than that in order to accommodate the rivet.
There is only a gap of 5/32" between the bushing and the center of the rivet, so the outside diameter of the die would have to be 5/16" (0.3125") or less in order to be centered on the rivet.

Just measured it. Looks to be 3/8" in diameter...possibly 5/16 (my eyes are shit!). But it'd be really tight. I'm with Vid on this one. Get a transfer punch and hit it with that. Those dies would be an expensive thing to buy, only to find out it's not making the clearance.

#12 4 years ago
Quoted from ForceFlow:

Then there's a gap between the bracket and the underside of the playfield. That in turn lowers the bushing on the top side of the playfield, reducing or eliminating the gap between the bottom of the flipper and the playfield.

How about if you countersink the mounting plate and then use a countersink machine screw and a nylok nut?

#13 4 years ago

I tried using a transfer punch, but the problem was getting a piece of material on the head of the rivet and somehow clamp the assembly down.

I sort of got one rivet, but it's a loose fit. The whole thing just kept sliding around all over the place with just about every hit. I even tried to put together a makeshift jig, but this just isn't working out.

So, what I think I'm going to do screw down the bracket to the playfield, then drill pilot holes and screw down the the bushing. Two of the holes are already used for screws. So, I guess I'll screw down the other two as well.

What a pain this turned out to be.

One of my disassembly photos to illustrate how the assembly is mounted:

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#14 4 years ago

Grind down the edge of the die all the way to the radius of the die. This might give you the clearance you need. But I like Vid's suggestion of using a transfer punch. And a hammer. Whap !!

EDIT: Can you hold the rivet head tight to the work with drill bit or punch locked into a piece of wood? And then Whap! it?

EDIT: THat rivet looks to be rather short. Got a longer one?

#15 4 years ago

Hmm..just had another thought--if I had the right drill bit, I could drill a hole through a scrap aluminum bar and then slip the bushing through that hole, and then clamp down the assembly.

Unfortunately, I don't have a bit large enough for that.

Guess I'll just screw it down to the playfield.

#16 4 years ago

Hmm...thinking about it again--would the the force of the flipper pawl banging against the notch in the bushing have a chance to knock the bushing askew and pull the screws out of the playfield?

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#17 4 years ago
Quoted from Starwriter:

How about if you countersink the mounting plate and then use a countersink machine screw and a nylok nut?

I like this idea. Rivets suck

#18 4 years ago

I ended up revisiting this again tonight and gave it another try.

I used the transfer bunch and some awkward clamping to punch the rivets, then gave them an extra squeeze with channellocks. So,the rivets are currently holding the bushings securely with very little movement.

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