Hoffman Amplifiers Tube Amplifier Forum
Forum and Web site Stuff => Hoffman Amplifiers web sites => Topic started by: EL34 on February 09, 2021, 11:34:52 am
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I designed a new tool to swage Turret lugs and Eyelets.
The tool I have been using for many years was made on a lathe and would be expensive to have a machine shop make them.
So here is the tool I came up with.
It is able to swage Turret lugs and eyelets.
This tool is located here in my web store.
Drill bits and other tools are on this page also.
https://hoffmanamps.com/MyStore/catalog/Tools.htm (https://hoffmanamps.com/MyStore/catalog/Tools.htm)
Images of the Swaging tool are below this post.
This page has info on how to use this tool and other handy info
https://el34world.com/charts/toolhowto.htm (https://el34world.com/charts/toolhowto.htm)
Other board building links
1/8th inch thick Glass epoxy board material is on this page
Turret lugs and eyelets are on this page also.
https://hoffmanamps.com/MyStore/catalog/BoardBuilding.htm
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The full sized image is here
https://el34world.com/charts/images/Img_1577.jpg (https://el34world.com/charts/images/Img_1577.jpg)
On the left side are all the parts for the top tool
On the right side are all the parts for the bottom tool
The top tool has two ends that thread onto the small threaded rod
The washers are used as spacers to set up each end of the tool
The pointy end has to stick out a certain amount so that an eyelet sits flush on the end of the tool
The other end has a hole for a turret lug
You have to set the depth of the threaded rod so that a turret lug goes into the hole all the way down to the base of the lug
The threaded rod should not keep the lug flange from sitting flush against the tool surface
The bottom tool is much easier to assemble.
The post below this one shows how to assemble the bottom tool
(https://el34world.com/charts/images/Img_1577.jpg)
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Bottom Tool
You thread the round metal piece onto the larger threaded rod
Leave just a bit of the pointy end sticking out
The bottom tool has a pointy end that flares out the bottom side of Turret lugs and eyelets
The big washer keeps the tool level on the mounting material
The Keps nut locks the tool onto the mounting material
1/8th inch thick G10 board material works great for a mounting plate
I stock this board material on the board building catalog page
A 6 inch piece is usually all you need to mount this tool onto a drill press
The bottom tool gets mounted into a solid piece of material
In the image below I have drilled a hole in a piece of 1/8th inch thick glass epoxy board material
The spring pushes the board material up so that the top side of the terminal sits flush against the top of the board surface
The top of the spring should be just a bit higher than the pointy end
You can stretch out the spring if you need to make it longer
(https://el34world.com/charts/images/Img_1575.jpg)
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Top Tool
You can see both ends of the top tool in the image below
One end has a hole that turret lugs go up inside when swaging
The other end has a very small pointy tip
The pointy tip centers the top of the eyelet into the tool
The pointy tip should only stick out a tiny bit
The pointy tip should not keep the eyelet from sitting flush onto the tool surface
The washers are used as spacers and keep the tool from sliding as you press the terminals
The end of the drill chuck should be up against the washers so it cannot slide.
(https://el34world.com/charts/images/Img_1565.jpg)
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In the image below you can see another shot of the eyelet sitting flush on the surface of the tool
The tool comes with some spacer washers
The tool is assembled with washer spacers in the center
The washers set the spacing for the pointy tool
5 washers come with the tool
The other end of the tool has a hole for a turret lug
The threaded rod in the center should not keep the turret lug from going all the way into the tool
You need to use the washers to get both ends of the tool set up correctly
The images below show that there is no gap when you place an eyelet or turret lug on the tool.
The terminals sit flush on the tool surface
(https://el34world.com/charts/images/Img_1569.jpg)
(https://el34world.com/charts/images/Img_1580.jpg)
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This video shows how the tool is used
It is filmed in 2.7k
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The Swaging tool has been added to my web store here
Drill bits for Turret Lugs and eyelets are also on the page below
https://hoffmanamps.com/MyStore/catalog/Tools.htm (https://hoffmanamps.com/MyStore/catalog/Tools.htm)
Board material, Eyelets and Turret lugs are here
https://hoffmanamps.com/MyStore/catalog/BoardBuilding.htm
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Very nice tool and at a great price too. :icon_biggrin:
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Very nice tool and at a great price too. :icon_biggrin:
Thanks
I had to come up with my own custom tool
The staking tools out there are really expensive and they can't do Turret Lugs and Eyelets
Having a machine shop make a tool, like the old style tool I sold, was not an option
I created a parts list for board building on this page
https://hoffmanamps.com/MyStore/catalog/PartsListIndex.htm (https://hoffmanamps.com/MyStore/catalog/PartsListIndex.htm)
It has 6 inches of board material for the Staking tool and one each of several items used to make boards
People can change the quantities and all the items to their shopping cart
If you don't want some of the items, just zero the quantities out.
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I had a customer say that the top pointy tip tool was grabbing the eyelets.
Sounds to me like he had too much of the small threaded rod exposed
The top tool pointy tip is only exposed a small amount
It's there to guide you into the center hole of the eyelet
Here's an image of the right and wrong way to set up the tool