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woodpekr · Posted: Wed Aug 18, 2004 2:11 pm Post subject: Bobbin Case Tension Gauge

Check this out

details at:
http://columbiariverquilting.com/towa_bobbin_case_tension_guage.html
_________________
Rich Durant
Portland, Oregon

KiteSquid · Posted: Wed Aug 18, 2004 2:39 pm Post subject:

That is one cool tool.

IIRC it is mostly used by industrial sewing machine mechanics to set bobbin tension.

$68 is a little much for me, even for a cool tool.
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VR/
KiteSquid
AKA TakoIka
AKA Harold
King George VA

P.S. Yet another post by the Squid..... Shocked

Doesent he ever shut up???

P.P.S. The wind is like the air, only pushier.

Stan · Joined: 18 Nov 2003 Posts: 592 Location: San Diego

Does someone make a tool to calibrate the gauge? Laughing

KiteSquid · Posted: Wed Aug 18, 2004 2:49 pm Post subject:

Stan is a true technician....

Every piece of test equipment MUST be calibrated!
_________________
VR/
KiteSquid
AKA TakoIka
AKA Harold
King George VA

P.S. Yet another post by the Squid..... Shocked

Doesent he ever shut up???

P.P.S. The wind is like the air, only pushier.

stevef · Posted: Wed Aug 18, 2004 2:57 pm Post subject:

cool tool, but I use the ole' flick-of-the-wrist technique:

1. Remove bobbin case
2. Hold thread between two fingers with bobbin dangling below.
3. Flick your wrist.

Observe results. If the bobbin falls to the floor, your tension is too loose. If the bobbin does not move at all, your tension is too tight. If the bobin drops and inch or two, the tension is just right and needs no further adjustment.

Fine tune the stiches thread tension with the upper tension adjustment.
_________________
Steve Ferrel
Go Build a Kite!
Measure once, buy twice!

woodpekr · Posted: Wed Aug 18, 2004 3:04 pm Post subject:

I have to agree with all of the comments above . . .

I was just impressed/amazed that there was such a specialized gadget when all you have to do is the procedure that SteveF describes to get the tension right.

I wonder if the Bureau of Standards has a benchmark bobbin to calibrate the Bobbin Gauge against . . . . Rolling Eyes

_________________
Rich Durant
Portland, Oregon

KiteSquid · Posted: Thu Aug 19, 2004 7:14 am Post subject:

Stan · Joined: 18 Nov 2003 Posts: 592 Location: San Diego

In a defense plant, I saw a mini torque wrench that was intended to turn one size of nut to one torque setting. It was the size of a fork and cost about $1,000. It was made by buying a $15 torque wrench and grinding a small notch in it. The markup was billed as "machining and testing." Laughing