Hello All,
It looks like I'm going to have to destroy the smaller knob to get it off. But I'd rather not do that. It's setscrew is rusted out, and only one half of the screw head is left. The shafts are rusted together inside. I tried WD-40 but it seems hopeless. I was thinking of getting two large pairs of pliers and trying to rotate the knobs in opposite directions. Maybe the shafts will break free from each other. But the knobs might break. So I haven't attempted that. Maybe it would work better if I took the knobs off first. But how do I get them off?
The problem is that one of the dial cords broke due to the shafts being somehow attached together and I'd like to replace it.
Maybe there's a way to do it using dental hooks and picks to pull on the cords, because it is open on the top and bottom. I can look in there. But with the shafts locked together the dial cord will break again. If someone has a good idea of how to solve this problem, please let me know. I have been given some good ideas for sets not so rusty. But this is pretty bad near the bottom of the chassis. There is also white oxidation on the built in foil antenna.
But for the most part this chassis is ok. It's just down where the screws held in the chassis and that shaft, and the screws that hold on the knobs. I was able to get this radio electronically restored, and it works great. But with this tuning shaft problem, it's an unusable set.
I hope I haven't written too much. But this is kind of frustrating.

Thanks,

Dave

Dave

Is it possible to drill out the set screw?

Norm

:Hello All,
: It looks like I'm going to have to destroy the smaller knob to get it off. But I'd rather not do that. It's setscrew is rusted out, and only one half of the screw head is left. The shafts are rusted together inside. I tried WD-40 but it seems hopeless. I was thinking of getting two large pairs of pliers and trying to rotate the knobs in opposite directions. Maybe the shafts will break free from each other. But the knobs might break. So I haven't attempted that. Maybe it would work better if I took the knobs off first. But how do I get them off?
: The problem is that one of the dial cords broke due to the shafts being somehow attached together and I'd like to replace it.
: Maybe there's a way to do it using dental hooks and picks to pull on the cords, because it is open on the top and bottom. I can look in there. But with the shafts locked together the dial cord will break again. If someone has a good idea of how to solve this problem, please let me know. I have been given some good ideas for sets not so rusty. But this is pretty bad near the bottom of the chassis. There is also white oxidation on the built in foil antenna.
: But for the most part this chassis is ok. It's just down where the screws held in the chassis and that shaft, and the screws that hold on the knobs. I was able to get this radio electronically restored, and it works great. But with this tuning shaft problem, it's an unusable set.
: I hope I haven't written too much. But this is kind of frustrating.
:
:Thanks,
:
:Dave
:

Norm,
It's really difficult to get a drill in there. I probably have to locate my Dremel and use that.

Thanks,

Dave
:Dave
:
: Is it possible to drill out the set screw?
:
:Norm
:
::Hello All,
:: It looks like I'm going to have to destroy the smaller knob to get it off. But I'd rather not do that. It's setscrew is rusted out, and only one half of the screw head is left. The shafts are rusted together inside. I tried WD-40 but it seems hopeless. I was thinking of getting two large pairs of pliers and trying to rotate the knobs in opposite directions. Maybe the shafts will break free from each other. But the knobs might break. So I haven't attempted that. Maybe it would work better if I took the knobs off first. But how do I get them off?
:: The problem is that one of the dial cords broke due to the shafts being somehow attached together and I'd like to replace it.
:: Maybe there's a way to do it using dental hooks and picks to pull on the cords, because it is open on the top and bottom. I can look in there. But with the shafts locked together the dial cord will break again. If someone has a good idea of how to solve this problem, please let me know. I have been given some good ideas for sets not so rusty. But this is pretty bad near the bottom of the chassis. There is also white oxidation on the built in foil antenna.
:: But for the most part this chassis is ok. It's just down where the screws held in the chassis and that shaft, and the screws that hold on the knobs. I was able to get this radio electronically restored, and it works great. But with this tuning shaft problem, it's an unusable set.
:: I hope I haven't written too much. But this is kind of frustrating.
::
::Thanks,
::
::Dave
::
:

Dave,
The set screw is probably a #4 or #6, so your best choice now is an "Easy-Out", if you can find one that small. Try breaking off the other half of the screw slot, then drill a hole into the set screw, and thread in the Easy-Out. If the knob is close to a panel, use a pin vise to hold the drill bit, then chuck the pin vise in the drill chuck. Some say diesel fuel/kerosene works when all others fail, but don't know. If successful, replace it with a hex set screw vs slot type.

marv

:Hello All,
: It looks like I'm going to have to destroy the smaller knob to get it off. But I'd rather not do that. It's setscrew is rusted out, and only one half of the screw head is left. The shafts are rusted together inside. I tried WD-40 but it seems hopeless. I was thinking of getting two large pairs of pliers and trying to rotate the knobs in opposite directions. Maybe the shafts will break free from each other. But the knobs might break. So I haven't attempted that. Maybe it would work better if I took the knobs off first. But how do I get them off?
: The problem is that one of the dial cords broke due to the shafts being somehow attached together and I'd like to replace it.
: Maybe there's a way to do it using dental hooks and picks to pull on the cords, because it is open on the top and bottom. I can look in there. But with the shafts locked together the dial cord will break again. If someone has a good idea of how to solve this problem, please let me know. I have been given some good ideas for sets not so rusty. But this is pretty bad near the bottom of the chassis. There is also white oxidation on the built in foil antenna.
: But for the most part this chassis is ok. It's just down where the screws held in the chassis and that shaft, and the screws that hold on the knobs. I was able to get this radio electronically restored, and it works great. But with this tuning shaft problem, it's an unusable set.
: I hope I haven't written too much. But this is kind of frustrating.
:
:Thanks,
:
:Dave
:

Marv,
I once tried something called a "screw-out". I used the drill end to drill into the screw, and it snapped off in the screw. Then I needed a screw-out-out (no such thing), and returned it to the store broken. I don't have very good luck with mechanical stuff or mechanical problems. I do much better with electronic problems and troubleshooting. If I can file off the other half of the screw head (it's a half moon shape), I can then drill out the screw. Unless there's a way to drill it out without removing that piece.

Thanks,

Dave
:Dave,
:The set screw is probably a #4 or #6, so your best choice now is an "Easy-Out", if you can find one that small. Try breaking off the other half of the screw slot, then drill a hole into the set screw, and thread in the Easy-Out. If the knob is close to a panel, use a pin vise to hold the drill bit, then chuck the pin vise in the drill chuck. Some say diesel fuel/kerosene works when all others fail, but don't know. If successful, replace it with a hex set screw vs slot type.
:
:marv
:
::Hello All,
:: It looks like I'm going to have to destroy the smaller knob to get it off. But I'd rather not do that. It's setscrew is rusted out, and only one half of the screw head is left. The shafts are rusted together inside. I tried WD-40 but it seems hopeless. I was thinking of getting two large pairs of pliers and trying to rotate the knobs in opposite directions. Maybe the shafts will break free from each other. But the knobs might break. So I haven't attempted that. Maybe it would work better if I took the knobs off first. But how do I get them off?
:: The problem is that one of the dial cords broke due to the shafts being somehow attached together and I'd like to replace it.
:: Maybe there's a way to do it using dental hooks and picks to pull on the cords, because it is open on the top and bottom. I can look in there. But with the shafts locked together the dial cord will break again. If someone has a good idea of how to solve this problem, please let me know. I have been given some good ideas for sets not so rusty. But this is pretty bad near the bottom of the chassis. There is also white oxidation on the built in foil antenna.
:: But for the most part this chassis is ok. It's just down where the screws held in the chassis and that shaft, and the screws that hold on the knobs. I was able to get this radio electronically restored, and it works great. But with this tuning shaft problem, it's an unusable set.
:: I hope I haven't written too much. But this is kind of frustrating.
::
::Thanks,
::
::Dave
::
:

Dave,
You could try prying from the outside edge of the remaining screw head, to break it off before drilling. I found a set of shaped diamond crusted tools for Dremel years ago at my local Tru Valu hardware. Some blunt end, ogees, cones, others needle points, in very small diameters. They've been very useful on a few occassions, but irreplaceable on others, such as yours.

marv

:Marv,
: I once tried something called a "screw-out". I used the drill end to drill into the screw, and it snapped off in the screw. Then I needed a screw-out-out (no such thing), and returned it to the store broken. I don't have very good luck with mechanical stuff or mechanical problems. I do much better with electronic problems and troubleshooting. If I can file off the other half of the screw head (it's a half moon shape), I can then drill out the screw. Unless there's a way to drill it out without removing that piece.
:
:Thanks,
:
:Dave
::Dave,
::The set screw is probably a #4 or #6, so your best choice now is an "Easy-Out", if you can find one that small. Try breaking off the other half of the screw slot, then drill a hole into the set screw, and thread in the Easy-Out. If the knob is close to a panel, use a pin vise to hold the drill bit, then chuck the pin vise in the drill chuck. Some say diesel fuel/kerosene works when all others fail, but don't know. If successful, replace it with a hex set screw vs slot type.
::
::marv
::
:::Hello All,
::: It looks like I'm going to have to destroy the smaller knob to get it off. But I'd rather not do that. It's setscrew is rusted out, and only one half of the screw head is left. The shafts are rusted together inside. I tried WD-40 but it seems hopeless. I was thinking of getting two large pairs of pliers and trying to rotate the knobs in opposite directions. Maybe the shafts will break free from each other. But the knobs might break. So I haven't attempted that. Maybe it would work better if I took the knobs off first. But how do I get them off?
::: The problem is that one of the dial cords broke due to the shafts being somehow attached together and I'd like to replace it.
::: Maybe there's a way to do it using dental hooks and picks to pull on the cords, because it is open on the top and bottom. I can look in there. But with the shafts locked together the dial cord will break again. If someone has a good idea of how to solve this problem, please let me know. I have been given some good ideas for sets not so rusty. But this is pretty bad near the bottom of the chassis. There is also white oxidation on the built in foil antenna.
::: But for the most part this chassis is ok. It's just down where the screws held in the chassis and that shaft, and the screws that hold on the knobs. I was able to get this radio electronically restored, and it works great. But with this tuning shaft problem, it's an unusable set.
::: I hope I haven't written too much. But this is kind of frustrating.
:::
:::Thanks,
:::
:::Dave
:::
::
:

:Marv,
: I once tried something called a "screw-out". I used the drill end to drill into the screw, and it snapped off in the screw. Then I needed a screw-out-out (no such thing), and returned it to the store broken. I don't have very good luck with mechanical stuff or mechanical problems. I do much better with electronic problems and troubleshooting. If I can file off the other half of the screw head (it's a half moon shape), I can then drill out the screw. Unless there's a way to drill it out without removing that piece.
:
:Thanks,
:
:Dave
::Dave,
::The set screw is probably a #4 or #6, so your best choice now is an "Easy-Out", if you can find one that small. Try breaking off the other half of the screw slot, then drill a hole into the set screw, and thread in the Easy-Out. If the knob is close to a panel, use a pin vise to hold the drill bit, then chuck the pin vise in the drill chuck. Some say diesel fuel/kerosene works when all others fail, but don't know. If successful, replace it with a hex set screw vs slot type.
::
::marv
::
:::Hello All,
::: It looks like I'm going to have to destroy the smaller knob to get it off. But I'd rather not do that. It's setscrew is rusted out, and only one half of the screw head is left. The shafts are rusted together inside. I tried WD-40 but it seems hopeless. I was thinking of getting two large pairs of pliers and trying to rotate the knobs in opposite directions. Maybe the shafts will break free from each other. But the knobs might break. So I haven't attempted that. Maybe it would work better if I took the knobs off first. But how do I get them off?
::: The problem is that one of the dial cords broke due to the shafts being somehow attached together and I'd like to replace it.
::: Maybe there's a way to do it using dental hooks and picks to pull on the cords, because it is open on the top and bottom. I can look in there. But with the shafts locked together the dial cord will break again. If someone has a good idea of how to solve this problem, please let me know. I have been given some good ideas for sets not so rusty. But this is pretty bad near the bottom of the chassis. There is also white oxidation on the built in foil antenna.
::: But for the most part this chassis is ok. It's just down where the screws held in the chassis and that shaft, and the screws that hold on the knobs. I was able to get this radio electronically restored, and it works great. But with this tuning shaft problem, it's an unusable set.
::: I hope I haven't written too much. But this is kind of frustrating.
:::
:::Thanks,
:::
:::Dave
:::
::
:
I would drill a hole 180° from the setscrew right thru the knob shoulder just like making a new setscrew hole. Use a little of your WD-40 in the hole if you don't have pentrating oil. Immobilize the shaft, hope the setscrew isn't all that tight and turn the knob with the strength of David. The shaft is softer than the setset. It might just come off.
Bill

This product can melt some kinds of plastic, but definitely won't melt bakelite. Work a small amount into the back side of the shaft and it will dissolve/soften the rust.

T.