Just find an Aluminum shop and get the sections you need.
Then drill through holes, use screws and nuts, that is less hassle than tapping. You can use the flanged sheet nuts, they will stay in place (sheet metal nuts).
There is something seriously amiss if you have to source something so common from thousands of kilometers away, and that too when you are in the continent and country known for its manufacturing history.
Norsk Hydro used to be big in sections, and already I have told you to recycle scrap heat sinks.
Another aspect is the expense and environmental damage caused by this activity.
Then drill through holes, use screws and nuts, that is less hassle than tapping. You can use the flanged sheet nuts, they will stay in place (sheet metal nuts).
There is something seriously amiss if you have to source something so common from thousands of kilometers away, and that too when you are in the continent and country known for its manufacturing history.
Norsk Hydro used to be big in sections, and already I have told you to recycle scrap heat sinks.
Another aspect is the expense and environmental damage caused by this activity.
If he wants a commercial product rather than some steampunk Frankenstein arrangement that's fine. I've used plenty of Conrad sinks and if I was on the other side of the world I think I too would import them. As for finding an aluminum shop and piecing something together, here in Australia at least, I reckon Conrad sinks cost no more or even less than some extrusions pound for pound. Plus they are, well, heatsinks already.
My point exactly, here extrusions (different shaped sections) are about the same price per kilo, some thin sections are a little - 10% - costlier. And heat sinks are after all cast (rarely) or extruded sections. Or stamped from extruded sections.
I do not know the extent of the Conrad facility, but they would be extruding the material, or buying extruded sections for further processing. That by itself is not unique, in that I should pay like below just because it is a Conrad heat sink.
I checked, there are Webra, Farnell and so on in Sweden, selling heat sinks, even a machining service is available.
I thought of sending some 2030 ICs to Argentina, the (10) chips would have been $2, and the minimal postage to that country was like $13 or so. So the landed cost was $ 15....which is what is to be considered.
And at least in India, I am able to get a variety, at a decent price and availability point...though I came across a fellow offering a 840 gram heat sink for about $21, way above street price.
The brand is important, too!
And also the buyer's perception that he got a satisfactory product.
I do not know the extent of the Conrad facility, but they would be extruding the material, or buying extruded sections for further processing. That by itself is not unique, in that I should pay like below just because it is a Conrad heat sink.
I checked, there are Webra, Farnell and so on in Sweden, selling heat sinks, even a machining service is available.
I thought of sending some 2030 ICs to Argentina, the (10) chips would have been $2, and the minimal postage to that country was like $13 or so. So the landed cost was $ 15....which is what is to be considered.
And at least in India, I am able to get a variety, at a decent price and availability point...though I came across a fellow offering a 840 gram heat sink for about $21, way above street price.
The brand is important, too!
And also the buyer's perception that he got a satisfactory product.
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Anyway, the buyer wants a product from a non responsive seller, at least I would consider another source, even just on a trial or make do basis, and get on with my project.
Thread started 2021-11-10...
Thread started 2021-11-10...
Mate, I have no idea what you are rambling on about? Shipping ICs to Argentina??? Then arguing against yourself?
"The brand is important, too!
And also the buyer's perception that he got a satisfactory product."
"The brand is important, too!
And also the buyer's perception that he got a satisfactory product."
My point was that the aluminum bit is cheap, shipping is not.
And it is really a generic product, so I was wondering why somebody in Sweden is prepared to wait two months and more to get them from Australia. Brand perception, or what?
J M Fahey is a member here, he wanted 2030 ICs made by CRC China to try, and the company did not respond to his e-mails, he wanted a lot of 100 pieces I think.
Anyway, they were not in stock here, so I dropped the idea of sending them to him in Argentina.
For a sample, it is OK, but for a generic lump of metal...
Machining needs are mild for properly extruded sections, and yes the roughness, waviness, whatever, is important, so a light grinding cut is normal.
I studied Mechanical Engineering, a subject was Heat and Mass Transfer, dealing with cooling tower design, heat sinks and so on.
So my suggestion to use a scrap bit of metal was not a wild one, given that it is a one-off project.
Of course, if he wants it to look good...
And it is really a generic product, so I was wondering why somebody in Sweden is prepared to wait two months and more to get them from Australia. Brand perception, or what?
J M Fahey is a member here, he wanted 2030 ICs made by CRC China to try, and the company did not respond to his e-mails, he wanted a lot of 100 pieces I think.
Anyway, they were not in stock here, so I dropped the idea of sending them to him in Argentina.
For a sample, it is OK, but for a generic lump of metal...
Machining needs are mild for properly extruded sections, and yes the roughness, waviness, whatever, is important, so a light grinding cut is normal.
I studied Mechanical Engineering, a subject was Heat and Mass Transfer, dealing with cooling tower design, heat sinks and so on.
So my suggestion to use a scrap bit of metal was not a wild one, given that it is a one-off project.
Of course, if he wants it to look good...
I asked for a price at the India company.
They want the company name to generate an offert..
How do I do now do I make up a companyname or what?
They want the company name to generate an offert..
How do I do now do I make up a companyname or what?
Send them a mail, explaining what you need. And give name of a company where you know somebody working there.
Indian laws do not allow export to individuals except as samples, you need to place an order, mention the price and payment method, then only Customs will release it for export.
Bit more complex than China, for example.
Price will be competitive, some people have a price per kilo thing going.
Ask for a catalog, and select one slightly larger than you need.
Indian laws do not allow export to individuals except as samples, you need to place an order, mention the price and payment method, then only Customs will release it for export.
Bit more complex than China, for example.
Price will be competitive, some people have a price per kilo thing going.
Ask for a catalog, and select one slightly larger than you need.
I got an mail from Conrad heatsink today apologising för the late answet ,so I ordered 2 MF35 151,5 from them.
So theres still hope for you who want to order from them..
So theres still hope for you who want to order from them..
Just let us know when they are shipped, and how much per kilo it actually cost you, the price of heat sink sections here is about $4 a kilo.
Keep us posted.
Keep us posted.
So for 62 AUD worth you ate paying $106 as shipping, the price for each becomes 85 landed in Sweden, and whatever charged by Customs there?
The weight of each is 2.46 kilos, so you are paying about US$9 per kilo at the factory gate.
A$ 30.93/2.46 kilos = A$ 12.57 * 0.72 = US$ 9.05
1 AUD is taken as 72 US cents.
We pay about half that here.
Keep us posted.
The weight of each is 2.46 kilos, so you are paying about US$9 per kilo at the factory gate.
A$ 30.93/2.46 kilos = A$ 12.57 * 0.72 = US$ 9.05
1 AUD is taken as 72 US cents.
We pay about half that here.
Keep us posted.
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Well lets hope they go trough Custom without beeing seen.thats happend before.
I dont know the weight ,maybe 3-4 Kg.
If I dont remember it wrong the shipping was even more from heatsinkusa.
I dont know the weight ,maybe 3-4 Kg.
If I dont remember it wrong the shipping was even more from heatsinkusa.
I thought it would be a lot less than a half.
Australia is an expensive place to live but everything is relative, our postal/courier workers would be able to afford Conrad heatsinks.
You seem bent on belittling someone else's decisions. If he wants to charter a plane to fly them or book a ticket on a world cruise to ship them in that's his decision. Mocking someone for doing what they want is saying more about you than them. I think Conrad make a good product and Ryssen made reasonable decision.
That is the same thing with brands, Swatch is made by the same group that makes Rolex.
I was wondering why the need to get something fairly ordinary (for me at least), from so far away.
It is extruded Aluminum, and the metal costs about the same everywhere, it is the processing cost that varies. Here also, depending on the quality of the alloy, there is a difference, the sections made from scrap are cheaper, and go dull after some time.
Also, in this case the freight is very high.
This means that you are having a lack of supply in Europe and North America.
It is a niche market, I doubt their volumes would be very large.
Our postal workers are well paid, but there are available amps from $10 to $60, and matching speakers. No need to do this level of sourcing...
Now I will wait for the shipment to actually arrive in Sweden.
I was wondering why the need to get something fairly ordinary (for me at least), from so far away.
It is extruded Aluminum, and the metal costs about the same everywhere, it is the processing cost that varies. Here also, depending on the quality of the alloy, there is a difference, the sections made from scrap are cheaper, and go dull after some time.
Also, in this case the freight is very high.
This means that you are having a lack of supply in Europe and North America.
It is a niche market, I doubt their volumes would be very large.
Our postal workers are well paid, but there are available amps from $10 to $60, and matching speakers. No need to do this level of sourcing...
Now I will wait for the shipment to actually arrive in Sweden.