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Dust Cap Removal-Acetone

MONGOMIKEY

MONGOMIKEY

scrupled-one
I am in the process of re-foaming several woofers and have searched these forums for removal of the dust cap. Threads mention cutting the cap in various ways as to re-use the cap. I haven't come across the method I use and thought I'd share it. Pour acetone on top of the dust cap and let it soak down until it reaches the glue on the bottom of the cap. Let it soak for a couple of minutes and just carefully lift the dust cap off. Once it drys out its re-usable. Doesn't hurt the cap/woofter at all. (I prefer to shim) Maybe I missed this somewhere but just thought I share.
 
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sealy said:
I doubt Acetone would be good on poly woofers.
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DEFINITELY have a care with poly, or plastic laminated or coated woofers. Acetone can dull the finish in a most hideous manner.

Ask me how I know.

(Does soften the glue up though ... )
 
Dust cap removal

Hi.

I just reformed my AR TSW 910 loudspeakers. I used a 1000 watt hair dryer to soften the glue and just slowly lifted the cap. Any remaining glue on the cone of the speaker I removed with Hoppie's #9 solvent. The Hoppie's works great for dissolving glue and doesn't harm the cone material. I wouldn't recommend using Hoppie's on paper cone material though.

Hope this helps.
 
Hmmm

Isn't the part that the voice coil sits on attached to the cone probably with the same solvent?????????
 
MONGOMIKEY said:
I am in the process of re-foaming several woofers and have searched these forums for removal of the dust cap. Threads mention cutting the cap in various ways as to re-use the cap. I haven't come across the method I use and thought I'd share it. Pour acetone on top of the dust cap and let it soak down until it reaches the glue on the bottom of the cap. Let it soak for a couple of minutes and just carefully lift the dust cap off. Once it drys out its re-usable. Doesn't hurt the cap/woofter at all. (I prefer to shim) Maybe I missed this somewhere but just thought I share.
Click to expand...

I use a version of that process and have mentioned several times. Instead of pouring Acetone on, I use a small brush and apply it to the top of the glue joint, then pull the cap away with a dull Exacto blade. Works great on paper woofers. :thmbsp:
 
I've never taken a dust cap off and shimmed a voice coil and I've refoamed dozens of speakers. Just play music or a test tone to center the cone while you glue the surround on, and you won't need to remove the dust cap.
 
Maxamillion said:
I've never taken a dust cap off and shimmed a voice coil and I've refoamed dozens of speakers. Just play music or a test tone to center the cone while you glue the surround on, and you won't need to remove the dust cap.
Click to expand...

I've had good and bad luck with that. Shimming is foolproof, IMHO - even if it is a bit more work.
 
Yes...The Acetone does wonders for the voice coil windings...as it trickles down and loosens the lacquer on the wire! Scary thought!!
 
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