I hope too that it doesnt bends anymore. I think that the gap is too small because the originall one was 4mm. An interesting thing is that the other plates doesnt bend that much, just one single plate bended. The other plates also bended but just 0.2mm and stays like that, so the gaps are now 3mm.
The french guy sugested to bolt and glue imediatly (after the structure is assembled) the plates to the square aluminium 10*10 mm pipes if we want to have a lower gap. I bolted the plates after three days so i guess that this was the problem in my case.
The canson paper is a special paper for painting that is very resistant in time, and it was used on the original Janus 50 with 220gr for original version and 210 to 180 gr for the amateur diy made Janus.
Considering that my magnets are n42 instead of n54 or n52 i used 120gr/sqm (30euro for a roll of 1.5m*15m).
BUT canson paper absorbs humidity very fast so i buyed two laqueur sprays (8euros/pcs).
Thanks. Me too!
Cheers
Sergiu
Laminating pouches are aviable in 125my. 80my. and A3 size .
I have used theese for a special speaker: LMT.
You might use paper too to reduce resonances.
Bernt Båndsei.
I have used theese for a special speaker: LMT.
You might use paper too to reduce resonances.
Bernt Båndsei.
http://www.amazon.com/Apache-AL13P-Professional-Adjustable-Temperature/dp/B0012UEQ5C
It gets quite stif heat laminated
Båndsei
It gets quite stif heat laminated
Båndsei
Here my LMT Linear motion transmitter .
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[/url][/IMG]
These are not laminated with paper,but alufoil.
Bernt
These are not laminated with paper,but alufoil.
Bernt
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Hi bandsei,
Interesting.. I also proposed this 560mm x 10 meters TPE Tedlar backsheet / back sheet for solar cells encapsulation-in Alternative Energy Generators from Electrical Equipment & Supplies on Aliexpress.com | Alibaba Group wich i think is similar to the final product resulted from the lamination aparatus that you posted earlier..
I have readed the Lineaum patents wich said that with the tedlar foil where achieved the best results on this speaker, better than mylar, or paper.
BUT the problem here is that i cannot find a source in Europe, or near Romania for this interesting foil and i allready ordered the canson paper.
Cheers
Sergiu
Here my LMT Linear motion transmitter .
[/url][/IMG]
[/url][/IMG]
These are not laminated with paper,but alufoil.
Bernt
so bernt this is only the pouche heated in an oven on a mould then aluminium foil on the ends to dampen some of the resonances?
its funny the LMT looks a bit like my take on the lino. although yours is driven by 2 coils form the side mine was driven by on i the middle. an had essential 2 halve cylinders.
so you could actually vacuum form with this as well ?
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How many micron is this ? i seen pouches stated as 2x 75 2x100 2x etc up to 2x 250 micron thats 0.5 mm 🙂 thats thick
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I used a laminating machine first ,then placed in a form and heated.
Alufoil is a part or the "coil".
In denmark you get 80 my and 125 my. 1/1000 mm.
Bernt
75-100-175-250 micron too
I think 80mic is 2x40mic.
Alufoil is a part or the "coil".
In denmark you get 80 my and 125 my. 1/1000 mm.
Bernt
75-100-175-250 micron too
I think 80mic is 2x40mic.
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hmm here they mention 2x75 so 150 in total. i guess yours is 2 as thick as what it says.
2x35 was the thinest i found. rest is all thicker. of if the foil is part of the coil, then a certain amount is not in the gap? am i seeing this correct?
2x35 was the thinest i found. rest is all thicker. of if the foil is part of the coil, then a certain amount is not in the gap? am i seeing this correct?
This is really interesting. So with this trick you can make two coils, one in each cilinder, laminate them and stick them together, but how can you make them stiffer enought to stay in the gap in a way so that they dont bend or cut in the elastics? Are these foils that resistant to mecanical stress?
i dont get what you want to say . you could do this before as well with paper. make 2 paper cylinders with a coil and stick them together. am i missing something
?
Hi Wrine,
There is a foil film (I dont remember exactly the name) that you cannot bond with glue because it doesnt stick or if it sticks it will get loosen shortly. After lamination can we bond the cilinders with glue?
I wasnt so explicit because I posted late in the night. 😀
Hello my friends,
Im back in business. I havent posted nothing because on plate from the total of 8 has arched and hasnt past the "one week trial".. I unglued the structure of on motor and unlocked it and then changed the problematic plate. I also choped about 10% of one magnet from the top when I was trying to pull them of, but there is no prob because I have 52cm gap and the coil has to be smaller and all in the gap at about 50cm lenght.
I redid everything so im back on track.
Bellow is some work in progress.
Now I have the 120gr/sqm paper and allot of 0.2 mm copper wire for the coils and was wondering on wich support to make them. A coil is composed by two coils glued toghether in antiphase.
I was thinking about a coil wich is winded on a thin foil support and then stick the cylinders on them. What do you say?
Cheers
Sergiu
Im back in business. I havent posted nothing because on plate from the total of 8 has arched and hasnt past the "one week trial".. I unglued the structure of on motor and unlocked it and then changed the problematic plate. I also choped about 10% of one magnet from the top when I was trying to pull them of, but there is no prob because I have 52cm gap and the coil has to be smaller and all in the gap at about 50cm lenght.
I redid everything so im back on track.
Bellow is some work in progress.
Now I have the 120gr/sqm paper and allot of 0.2 mm copper wire for the coils and was wondering on wich support to make them. A coil is composed by two coils glued toghether in antiphase.
I was thinking about a coil wich is winded on a thin foil support and then stick the cylinders on them. What do you say?
Cheers
Sergiu
Attachments
Hello my friend,
The coil of on speaker is composed of two coils in parallel one coil is with + at + and - at - and the other one is + at - and - at + so it has to work in a push pull operation. Ideally the coil should be made from a flexible dual sided pcb wich i dont have and dont know where to buy from... 🙁
Cheers
Sergiu
Also the net elastics strings are doying this abit but the main role for them is to center the coil and for keeping the coil centered in the gap ..
Wrine have you tryied cutting the coil from aluminiun sheets and not etching them?
Wrine have you tryied cutting the coil from aluminiun sheets and not etching them?