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Old 11th April 2014, 07:25 PM   #1
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Default Smashed in Dust Caps

I am considering buying a pair of speakers but the 12" passive radiators have smashed in dust caps. I am aware of the needle trick to carefully pull them back out, but I was wondering if anybody has ever tried a shop vac? With my shop vac, I am slightly concerned that I could suck off the entire dust cap if I am not extremely careful.

-Stu
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Old 11th April 2014, 07:37 PM   #2
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Well you could try 'suck, pull to desired straightness, switch off vacuum, remove nozzle' if you are overly concerned
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Old 12th April 2014, 12:34 AM   #3
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You could run the vac with a lamp dimmer or a variac.Or cut a hole or slot in the tube you are going to put against the cap and control the suction with your hand.
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Old 12th April 2014, 03:17 AM   #4
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Old 12th April 2014, 05:35 PM   #5
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Default Vaccum cleaner!

I use a vacuum cleaner with variable power (turned right down) and preferably the sliding opening in the hose wide open. I gently increase power until the cap pops out.

Ben
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Old 12th April 2014, 05:57 PM   #6
infinia is offline infinia  United States
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post an image there are many types of dust caps /as there are methods
uncontrolled shop vacs would be my last resort
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like four million tons of hydrogen exploding on the sun
like the whisper of the termites building castles in the dust
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Old 14th April 2014, 09:32 AM   #7
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Quote:
Originally Posted by infinia View Post
post an image there are many types of dust caps /as there are methods
uncontrolled shop vacs would be my last resort
You could add control by lengthening the hose with a piece of pipe with a slit in it, the more you slide the pipe over the hose, the more power as the slit becomes shorter...

Or simply drill or cut holes in the extension pie and cover these like you're playing a flute until the power is sufficient
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Old 14th April 2014, 11:52 AM   #8
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Default Done It A Hundred times...

Disconnect the shopvac hose.
Start the shopvac.
Put suction end of hose over dome.
Carefully introduce hose to shopvac input so as to regulate vacuum/airflow.
Carefully vacuum 'massage' dome back into shape.

Dan.
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