I have an interesting problem


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billyg
billyg
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I haven't used composite materials for some time and started looking at them again recently.

I was wondering how I might create a drum 14" in diameter and 6.5" deep with a thickness of around 1/4".

Before you ask yes this is a music drum shell.

It's important that the quality of the shell is maintained on the inside and especially at the edges because the have to been machined at either 90 or 45 degrees.

These are being made by small companies in the US and in Korea but I wondered if it would require investment in expensive equipment?



Thanks 

PS I have added an example pic to illustrate the end result desired
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Edited 12 Years Ago by billyg
Dravis
Dravis
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I used to be a drummer in a few blues-rock outfits --- back in the old days, way before my interest in composites & CF laminates. Back then i built my own snare drum using a barrel type solid wood stave construction and gluing it up with Epoxy.

Drum shells need to be very strong, especially at the edges and the areas where the hoop holders are bolted through the shell.

I see no problem in making a plug and laying up starting with an inside layer of Profinish, then 400 g twill CF followed by a few "filler layers" of glass weave, then top up with two layers of CF -- the outside one being pro-finish, to provide for nice "cut lines" finish with peel-ply,  and get a pro paintshhop to clear coat it.. should look great.

You will probably need to invest in a vacuum bagging starter kit, to get good results. 

For a truly unique look,

one could try the "coloured carbon" or the special wide strand CF types ..

At a distance the normal CF would look almost grey-black uniform polished colour, you may get a more visible pattern using the wide tow CF types.

Good luck ..

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billyg
billyg
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Thanks for your reply I shall research further and letr you know how it goes.

Smile
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