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Topic: Making legs |
Brian Henry
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Posted 28 Jan 2025 4:37 pm |
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I am in the process of making aluminum legs for the EMCI. I got the aluminum 7/8ā tubes on eBay and also got the 3/4 ā inserts and threaded them and inserted them into the tubes. I now need 1/2ā tubing and have to thread the bottom of the tubes. I know the diameter is 7/8ā but have no idea what size die to use to cut the threads. I also need those knurled microphone like screws that tighten the clutches. Any ideas.
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Jeremy JT Young
From:
Loretto Tennessee, USA
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Posted 28 Jan 2025 5:09 pm Knurled clutches
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Brian thise Knurled clutches are available for purchase from atlas stands. But they are pretty pricey. I'm working on creating a 3D printed version of them. The threads are turning to be tricky lol
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JT Young, Living the Dream. Smile, make a positive impact on someone else's life today ! š |
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George Piburn
From:
The Land of Enchantment New Mexico
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Posted 29 Jan 2025 5:56 pm Threads
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A precision machinist supply will have speciality tools to find thread counts for you, they will also sell the tap and die for it too.
If memory serves , 27 per inch on those 7/8 tubes.
Obviously you need to take the parts you want to mimic with for measuring.
On 3D prints we clear the threads with a normal tap by hand real quick
Our fusion expert has 3D printed receiving threads from 6-32 up but can go whatever count and diameter cut depth and so on is called for.
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Ian Worley
From:
Sacramento, CA
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Posted 29 Jan 2025 7:23 pm
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George is correct, the standard Atlas-type steel clutches are 7/8-27 thread. The problem you will have with threads that fine on aluminum is durability. There were a couple of folks making aluminum legs in years past that used a much coarser thread pitch, 7/8-14, to avoid problems with cross-threading and stripping. Those threads were also chrome plated, which alleviates the other issue you'll face with bare aluminum, galling and seizing of the threads. Forumite Wayne Brown has been working on some options for producing new aluminum legs, look for his post in New Product Announcements, he may be able to help you out.
BTW, the smaller tubes on standard Atlas-type legs and mic stands are 5/8", not 1/2" as you mentioned in your OP.
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All lies and jest, still a man hears what he wants to hear and disregards the rest - Paul Simon |
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Brian Henry
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Posted 30 Jan 2025 4:51 pm
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Thank you George and Ian you have been very helpful. I have the 7/8ā tubes and the 1/2ā 13 TPI already installed at the top. I just need to cut these 7/8ā 27 TPI threads. Iām not in the leg making business, I just need a set for my EMCI. My set will cost me about $25 each. They are not that hard to make really . Two years is way too long. Mine has taken me two months and close to finishing.
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Jeremy JT Young
From:
Loretto Tennessee, USA
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Posted 30 Jan 2025 5:05 pm Aluminum legs
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Yes We have ran into all those issues and abandon the standard screw 7/8 clutch for now due to the issues with aluminum and threads nit being a good marriage. We designed a different system as fir aluminum legs that uses a 1/4 20 allenhead to t8ghten them. Still much lighter than standard legs I designed a wrench to go with them lol. Works for me.....
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JT Young, Living the Dream. Smile, make a positive impact on someone else's life today ! š |
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Rich Cottle
From:
Sacramento California
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Brian Henry
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