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  #11  
Old 9th June 2021, 10:59 AM
Richard Richard is offline
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Default Re: Depressed Amplifier Chassis - K5881

OOps! just seen your pics. That's almost nothing imho, remove the TX and tap the mounting holes back level from the inside with a soft drift whilst supporting the top plate on a block of wood covered with a cloth Get an assistant to hold the amp and if you don't want to risk metalwork pack the depressed corners with an extra washer or 2 to level up the TX.
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  #12  
Old 9th June 2021, 12:52 PM
bob orbell bob orbell is offline
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Default Re: Depressed Amplifier Chassis - K5881

I agree with Richard after seeing the pictures, I was expecting big damage. Bob
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  #13  
Old 9th June 2021, 01:21 PM
Dave999 Dave999 is offline
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Default Re: Depressed Amplifier Chassis - K5881

yep in this case that is the method. Tap the holes back into position

but i have to disagree with some sentiment in the thread


steel is ductile rather than springy in most cases
and aluminium depending on age is rather brittle and work hardens very quickly

be careful pressing or bending aluminium
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  #14  
Old 9th June 2021, 03:30 PM
Pingushome Pingushome is offline
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Default Re: Depressed Amplifier Chassis - K5881

Hi,
Yep itís the top plate as you said and a press or a gentle tap with a heavy hammer on a flat base then paint if you require. A spray can of satin black from your friendly local motor factor should do nicely.
Good luck
Martin
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  #15  
Old 9th June 2021, 03:55 PM
bob orbell bob orbell is offline
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Default Re: Depressed Amplifier Chassis - K5881

Quote:
Originally Posted by Dave999 View Post
yep in this case that is the method. Tap the holes back into position

but i have to disagree with some sentiment in the thread


steel is ductile rather than springy in most cases
and aluminium depending on age is rather brittle and work hardens very quickly

be careful pressing or bending aluminium
Sorry Dave, Aluminium age hardens, cast iron work hardens. 49 years as a tool maker. Bob
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  #16  
Old 14th June 2021, 10:21 AM
Dave999 Dave999 is offline
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Default Re: Depressed Amplifier Chassis - K5881

Yes bob i agree my mistake

but basic premise is the aluminium snaps and is un predictable in a number of ways linked to age and alloy.

heat it: tap it or press it back works brilliantly or doesn't. and it snaps like biscuit.....seems to be that its a bit of a coin-flip every time

i'm very wary if i have to heat it. Perfect structure to puddle in seconds. i scribble on it with permanent marker when it smokes and changes colour thats hot enough

not exactly scientific but avoids disaster

unless this is just a function of alloys used in car trim grills and bits of bike n scooter

Dave
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