Buy a Magnehelic Gauge, or build your own?
Well, I went with the later option.
Magnehelic, what's up with that??
For years I've used the 'old school' method of pressure testing a clarinet joint. Cover holes with fingers, with mouth on the top of the joint, blow (pressure) or suck (vacuum) test. You get the feel after a while, can determine a lot...
After seeing and then trying a Magnehelic gauge, I was intrigued with the possibility of increased accuracy (a number assigned to a given pressure!) and the idea (during flu season!) of not putting the clarinet in my mouth.
After a bit of study and some purchasing, there is now a Magnehelic at the workshop. It's handy!


A bunch of disparate parts. Some from eBay, a few were left over from old projects, like from High School times.

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I wanted the faceplate to be tidy, things nicely lined up, etc. so I did all the drilling on the milling machine.

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Plans are good!

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And look, the big 4" hole missed that screw!

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Dusty work.

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Faceplate, populated.

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Plumbing installed.

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Fairly simple really.

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Meet the Magnehelic.

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to inquire about an instrument, write to me via e-mail or post

Granlund  Woodwind  Repair
8612  Wabash Avenue  South
Seattle, Washington  98118-4749
206-448-9627

prices subject to change