How much do you pay for copper and perspex?

pippin88 · 12-03-2002, 12:16 AM

Rang a few places I know of.

Basically costs are:
(Thick x width x length)
Copper:
12.7mm x 50.8mm x 1m = $107 AUD (approx $55 USD)
12.7mm x 101mm x 1m = $181 AUD (approx $90 USD)

Perspex:
4.5mm x 1m x 1m = $100 AUD (Approx $50 USD)

Barbs:
Approx $3 each ($1.50 USD) (from a truck place down the road, have not looked at a proper supplier, just this small place)

This means that each CPU block (8cm x 5cm) costs about $20 AUD ($10 USD) in materials, this has some wastage and tooling cost factored in.

I havent looked at mounting.

How much is perspex and copper costing you guys? Do my costs look reasonable or high or nice and cheap?

Nick C · 12-03-2002, 12:22 AM

I buy most my stuff off of Ebay... I've gotten 100 bucks wirth of copper for 25... and that goes for mills too

Cathar · 12-03-2002, 06:16 AM

Go to a tooling shop and look in their offcuts bin for copper busbar (99.9+% pure copper). You'll get it VERY cheap.

Brass barbs should be costing you around $1.50 each (Aussie) if you look hard enough.

Perspex is to be avoided for tops - cracks too easy - you want Lexan.

pippin88 · 12-03-2002, 03:36 PM

Under what situation would perspex crack?

My design features the mounting interfacing with the copper base, not the perspex top.

And the top would be held on with 8 small screws.

May I ask how much the copper har used in your block is costing you? (I can understand if you do not want to say)

Cathar · 12-03-2002, 07:18 PM

Perspex can crack from dilling holes into it, which introduces micro-fractures, when when you apply pressure with screws to screw it on or attach it to something, those cracks will grow.

To be honest, I don't know how much the copper costs me per block, as it's all wrapped up in the single per-block price that I buy them for from the machinists.

Jessfm · 12-13-2002, 08:34 PM

Depends how you look at it.

I certainly wish i could manufacture for $20 , I would be able to own the market

material costs are very low compared to the other hidden charges.

I love all this speculation, jees you would thinkw e make a fortune from our companies

In the UK material costs are possibly the highest out of any I have seen.

pippin88 · 12-14-2002, 04:42 AM

Stopped by EMCO on the way to my dads (Among other places) and picked up about a metre of copper for approx $11 a kilo. Thats pretty good, when I was going to have to pay 30% or so more if I went to a proper supplier.

12-03-2002, 12:16 AM	#1
pippin88 Cooling Savant Join Date: Oct 2002 Location: Australia Posts: 285	How much do you pay for copper and perspex? Rang a few places I know of. Basically costs are: (Thick x width x length) Copper: 12.7mm x 50.8mm x 1m = $107 AUD (approx $55 USD) 12.7mm x 101mm x 1m = $181 AUD (approx $90 USD) Perspex: 4.5mm x 1m x 1m = $100 AUD (Approx $50 USD) Barbs: Approx $3 each ($1.50 USD) (from a truck place down the road, have not looked at a proper supplier, just this small place) This means that each CPU block (8cm x 5cm) costs about $20 AUD ($10 USD) in materials, this has some wastage and tooling cost factored in. I havent looked at mounting. How much is perspex and copper costing you guys? Do my costs look reasonable or high or nice and cheap?

12-03-2002, 12:22 AM	#2
Nick C Cooling Neophyte Join Date: Sep 2002 Location: OREGON Posts: 62	I buy most my stuff off of Ebay... I've gotten 100 bucks wirth of copper for 25... and that goes for mills too

12-03-2002, 06:16 AM	#3
Cathar Thermophile Join Date: Sep 2002 Location: Melbourne, Australia Posts: 2,538	Go to a tooling shop and look in their offcuts bin for copper busbar (99.9+% pure copper). You'll get it VERY cheap. Brass barbs should be costing you around $1.50 each (Aussie) if you look hard enough. Perspex is to be avoided for tops - cracks too easy - you want Lexan.

12-03-2002, 03:36 PM	#4
pippin88 Cooling Savant Join Date: Oct 2002 Location: Australia Posts: 285	Under what situation would perspex crack? My design features the mounting interfacing with the copper base, not the perspex top. And the top would be held on with 8 small screws. May I ask how much the copper har used in your block is costing you? (I can understand if you do not want to say)

12-03-2002, 07:18 PM	#5
Cathar Thermophile Join Date: Sep 2002 Location: Melbourne, Australia Posts: 2,538	Perspex can crack from dilling holes into it, which introduces micro-fractures, when when you apply pressure with screws to screw it on or attach it to something, those cracks will grow. To be honest, I don't know how much the copper costs me per block, as it's all wrapped up in the single per-block price that I buy them for from the machinists.

12-13-2002, 08:34 PM	#6
Jessfm Cooling Savant Join Date: Apr 2002 Posts: 110	Depends how you look at it. I certainly wish i could manufacture for $20 , I would be able to own the market material costs are very low compared to the other hidden charges. I love all this speculation, jees you would thinkw e make a fortune from our companies In the UK material costs are possibly the highest out of any I have seen.

12-14-2002, 04:42 AM	#7
pippin88 Cooling Savant Join Date: Oct 2002 Location: Australia Posts: 285	Stopped by EMCO on the way to my dads (Among other places) and picked up about a metre of copper for approx $11 a kilo. Thats pretty good, when I was going to have to pay 30% or so more if I went to a proper supplier.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)