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Old 4th July 2010, 10:19 PM   #1
jdubs is offline jdubs  United States
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Default Making a 30ppi foam plug

Guys

I have my Yorkville Unitys where I want them in terms of sound (DEQX controlled, actively triamped), but really want to try foam plugs in them. I can get 13" cubes of 30ppi foam for $75 each from Swiss Tropicals.

The Unity horn is 15" in diameter and is ~11" deep. How can I "massage" the cube shape into an appropriately shaped cone?

Thanks for any and all tips! I'd be happy to buy a pair of the 13" cubes for someone if they can turn my pair into cones for me!

-Jim
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Old 4th July 2010, 10:23 PM   #2
Loren42 is offline Loren42  United States
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You might be able to cut the foam with a hot wire.
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Old 4th July 2010, 10:54 PM   #3
badman is offline badman  United States
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Foam cutters are sold at hobby stores, and 30ppi can be fairly effectively shaped with just scissors- like trimming a hedge.
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Old 5th July 2010, 02:11 AM   #4
Paul W is offline Paul W  United States
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Electric carving knife and a beard trimmer
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Old 5th July 2010, 11:18 PM   #5
jdubs is offline jdubs  United States
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Thanks guys. I think the hot wire idea will yield the cleanest cuts. Anyone want to tackle the job for me? If not, might order 3, knowing that I will screw one up.

Thanks
Jim
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Old 6th July 2010, 12:55 AM   #6
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Quote:
Originally Posted by Paul W View Post
Electric carving knife and a beard trimmer
What Paul said. You can get an electric kitchen knife for $10 and it won't melt the edges like a hot knife. A beard trimmer will smooth up the rough edges.
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Old 6th July 2010, 03:37 AM   #7
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