02GF74
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| posted on 18/4/08 at 07:49 AM |
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DIY speaker bases
looking to make some heavy speaker bases.
So anyone here deals with black granite? and is local to me?
anyway - that is plan A.
plan B goes like this.
make a sandwich of lead sheet and stainless(?) or aluminium sheet/plate held together by bolts. lead sheet is roofing stuff on a roll from Travis
Perkins - but how do I make the base so that the sheet (comes in a roll) get's nicely flattened?
I should point out I have been to a few kitchen work top places but that is £££££
Also looked at chopping boards but these are too smnall or too thin - likewise with floor tiles, usually too thin although I could glue a couple
together.
Dimensions:
350 x 250 x 50 (in mm)
[Edited on 18/4/08 by 02GF74]
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tegwin
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| posted on 18/4/08 at 07:50 AM |
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Why not cast them out of concrete?
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02GF74
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| posted on 18/4/08 at 07:53 AM |
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^^^ as they sit in the best room I would like them to look nice/expensive but on a locost budget. 
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smart51
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| posted on 18/4/08 at 07:53 AM |
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For granite, check funeral headstone companies. They're bound to get one wrong from time to time and have nice polished stone rectangles with
spelling mistakes on them.
Lead is very ductile. I'd but the sheets between two thick pieces of MDF and stand on it. It that didn't work well enough, I'd
head the lead up with a flame to soften it then flatten it with a smaller piece of MDF.
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r1_pete
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| posted on 18/4/08 at 07:54 AM |
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Have look in decent kitchen suppliers for granite chopping boards they come in a veriety of sizes, and break quarry tiles when you drop them....
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balidey
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| posted on 18/4/08 at 07:55 AM |
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My dad made some for a hifi company a while ago, he used 'cultured marble' which is basically polyester resin (as used in fibreglass)
filled with loads of marble powder. With some clever use of colour pigment you can make it look like real marble, or just make it one solid colour.
They did look really good, but you need an open mould to 'cast' it in, but it only needs to be wood with a filler / paint cover.
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02GF74
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| posted on 18/4/08 at 07:57 AM |
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^^^ there's an idea.
fake granite with slices of lead inside ..... hmm.......
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tegwin
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| posted on 18/4/08 at 07:59 AM |
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No reason why you cant add a dye to the concrete....when polished up you might be suprised how similar to granite it can look from a distance
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coozer
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| posted on 18/4/08 at 08:05 AM |
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You can flatten the lead out with a rolling pin on a flat worktop.
1972 V8 Jago
1980 Z750
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balidey
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| posted on 18/4/08 at 08:06 AM |
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quote:
Originally posted by 02GF74
fake granite with slices of lead inside ..... hmm.......
I don't think you'll need the lead, you'll be surprised how heavy resin is with filler in it. We used to use loads of material to
use a a filler. Onyx, chalk, glittery sprinkles (yes, a kitchen sink in black with gold sprinkles ) you can experiment with loads of stuff (try the
cement as mentioned above), just chuck it in until its like treacle. But we used to leave it to set on a vibrating table to bring the air up to the
surface (the base as it was upside down). Its amazing how heavy this stuff comes out.
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tegwin
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| posted on 18/4/08 at 08:10 AM |
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Could you melt the lead with a gas torch and cast it into a wooden mould?....that would be locost and could look rather cool....
Not sure how that much lead would effect the speaker units magnets though!
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eznfrank
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| posted on 18/4/08 at 08:14 AM |
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What about travertine ro a concrete manufactured replica, should be cheap enough. Go to a decent floor tile show room and ask for a sample.
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02GF74
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| posted on 18/4/08 at 08:17 AM |
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quote:
Originally posted by tegwin
Could you melt the lead with a gas torch and cast it into a wooden mould?....that would be locost and could look rather cool....
Not sure how that much lead would effect the speaker units magnets though!
that would cost a fair bit in gas plus the fumes!!?!!
lead is not magnetic, well, not since the last time I looked.
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tegwin
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| posted on 18/4/08 at 09:07 AM |
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Once the fumes get to you, im guessing the money wont be an issue
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RazMan
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| posted on 18/4/08 at 10:13 AM |
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Have you felt the weight of that composite marble? I doubt you will need any lead if you make the bases 50mm thick.
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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speedyxjs
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| posted on 18/4/08 at 11:33 AM |
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quote:
Originally posted by 02GF74
I would like them to look nice/expensive but on a locost budget.
So that would be £250 then
How long can i resist the temptation to drop a V8 in?
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Dale
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| posted on 18/4/08 at 12:57 PM |
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A few years back when I was doing some home renovations, I had to cut off some pre cast concrete steps with a landing to just use the steps. I cut
it with a gas powered chop saw while spraying water on the blade. It gave a very nice polished finish. The same thing could be done to a cast block
of concrete and as said if you pigment it while casting and maybe through a few handfulls of mica in it you would have a unique base.
Dale
Thanks
Dale
my 14 and11 year old boys 22
and 19 now want to drive but have to be 25 before insurance will allow. Finally on the road
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Liam
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| posted on 18/4/08 at 03:04 PM |
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Why not use lead shot as a filler in either a concrete or resin cast. We had buckets of the stuff we put in bags as ballast for our airship at my old
work - amazingly heavy!
Liam
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