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Old 27th September 2002, 11:50 PM   #11
jwb is offline jwb  United States
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Use the shafts and couplers from an erector set.
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Old 11th April 2005, 06:07 AM   #12
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Default What do you mean?

> Post #11
Use the shafts and couplers from an erector set.
I dont understand the above reference

The extensions at http://sound.westhost.com/purchase.htm look the best but at $21 dollars seem expensive.

Is there a cheaper alternative?
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Old 11th April 2005, 11:13 AM   #13
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Old 11th April 2005, 12:03 PM   #14
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also Jameco has them for about 4$ each.
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Old 11th April 2005, 12:54 PM   #15
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these are stainless steel --

http://www.smallparts.com/products/d...tions/crsx.cfm
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Old 11th April 2005, 01:56 PM   #16
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The easiest way to implement shaft extender is to use 1/2 OD / 1/4 ID plastic washer for bushing, 1/4 brass rod for extention, and 1/4 ID PCV water pipe for coupling. All materials available at Home Depot, or your preferred building materials supplier.
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Old 12th April 2005, 08:01 PM   #17
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Quote:
1/4 ID plastic washer for bushing
Digikey sell part RP383-ND or similar. Unfortunately, they don't have a metric (6mm) equivalent for the european guys...
Massimo
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Old 12th April 2005, 10:29 PM   #18
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Quote:
Originally posted by antomas

Digikey sell part RP383-ND or similar. Unfortunately, they don't have a metric (6mm) equivalent for the european guys...
Massimo
This is still not a bigh deal. Another way to do it is use a thin piece of FR-4 material (PCB material) or thin plastic, drill it through with 6mm drill, and attach to the panel with double sided tape or glue. The panel opening has to be larger than 6mm.

I fixed this way an off center hole in one of my prototypes and it worked just fine
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Old 13th April 2005, 01:13 PM   #19
antomas is offline antomas  Europe
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Default In doubt

Dear Peter, thanks a lot for your (as usual informative) answer.

Just for curiosity, a few years ago I bought a few of the Digikey washers; the material (nylon?) they are made of looks very smooth and appropriate for the purpose. I have instead some doubts about FR-4 (epoxy?). Correct if I'm wrong, but it seems a bit abrasive to me...

Thanks a lot,
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Old 13th April 2005, 03:16 PM   #20
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In my case, I used very thin piece (0.025") and with brass shaft, it acted as a very nice bushing (providing the hole was right fit)).

This material is much softer than brass (as it's not pure epoxy, but mostly fibre).
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