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Old 12-17-2017, 04:52 AM
elavir elavir is offline
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Default Hollow planishing

Hi guys,

when you want to finish a high or low crown (aluminum) sheet one can planish
it with a slapper and dolly to smoothen it and sand it. But with what tools can hollow
planishing be done?

Cheers Richard.
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Old 12-17-2017, 01:28 PM
Maxakarudy Maxakarudy is offline
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Hi Richard,

Are you talking about bowl shape and how to polish it?
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Old 12-17-2017, 01:43 PM
elavir elavir is offline
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Hi Martin,

Something like that. It's for the top of a tank.

CAM00540.jpg

CAM00541.jpg

CAM00542.jpg

The middle of the bowl is flat wit a radius on the sides.

Cheers Richard.
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Old 12-18-2017, 03:58 AM
Gojeep Gojeep is offline
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I don't know if anyone else does it this way but I made some curved dollies to work areas like that. You can't buy them though. Also use a small hand held beater bag.



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Old 12-18-2017, 08:43 AM
Marc Bourget Marc Bourget is offline
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Marcus,

Is the other item in the picture a type of height checker?

Merry Christmas and Happy New Year, everyone!
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Old 12-18-2017, 10:20 AM
elavir elavir is offline
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Quote:
Originally Posted by Gojeep View Post
I don't know if anyone else does it this way but I made some curved dollies to work areas like that. You can't buy them though. Also use a small hand held beater bag.
Marcus, thanks for the tip. You made the dolly with an angle grinder?



Quote:
Originally Posted by Marc Bourget View Post
Marcus,

Is the other item in the picture a type of height checker?

Merry Christmas and Happy New Year, everyone!
Hi Marc, thnx Merry Christmas to you and everyone else.
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Old 12-18-2017, 01:06 PM
cliffrod cliffrod is offline
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Quote:
Originally Posted by elavir View Post
Hi Martin,

Something like that. It's for the top of a tank.

Attachment 44490

Attachment 44491

Attachment 44492

The middle of the bowl is flat wit a radius on the sides.

Cheers Richard.
Man, Richard- thanks for the Mondial tank pics. Posting them is a pretty great way to say Merry Christmas. You made my day.

Merry Christmas and Happy New Year!
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Old 12-19-2017, 09:35 AM
elavir elavir is offline
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Quote:
Originally Posted by cliffrod View Post
Man, Richard- thanks for the Mondial tank pics. Posting them is a pretty great way to say Merry Christmas. You made my day.

Merry Christmas and Happy New Year!
Clint, you're welcome.
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Old 12-19-2017, 10:04 AM
crystallographic crystallographic is offline
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Hi guys,

when you want to finish a high or low crown (aluminum) sheet one can planish
it with a slapper and dolly to smoothen it and sand it. But with what tools can hollow
planishing be done?

Cheers Richard.

/////////////////////////////

Hi Richard,
When I make parts that have shapes like this, I try to lay out the sections so that I can flip this shape over and planish it in reverse - using smooth tools because it is also difficult to metal finish - and also to sand the primer nicely...! For me, I have to plan this hollow shape out in advance, so I don't make an exhausting trip through a swamp for myself.

Very Happy Christmas,
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Old 12-20-2017, 03:11 AM
Gojeep Gojeep is offline
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Quote:
Originally Posted by elavir View Post
Marcus, thanks for the tip. You made the dolly with an angle grinder?
Yes mate. It was a dolly I already had so cut the slots to the depth I wanted and then went from there.


Quote:
Originally Posted by Marc Bourget View Post
Marcus,

Is the other item in the picture a type of height checker?

Merry Christmas and Happy New Year, everyone!
It is a back gauge I made back in the 80's. Just uses a drill bit to scribe the line in the end held in by a set screw. All made from stainless. I used it to mark the dolly so I had a guide to the depth of the slots I cut.
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