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Re: little green men

Jeff Sanchez

#10585

Stripping Magnet Wire | 15 July, 1999

I need a good chemical to remove the lacquer finish off of magnet wire. I know there are different kinds but I need one that really works. Any suggestions would be great. thanks in advance guys.

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ScottM

#10586

Re: Stripping Magnet Wire | 15 July, 1999

| I need a good chemical to remove the lacquer finish off of magnet wire. I know there are different kinds but I need one that really works. Any suggestions would be great. thanks in advance guys. | What is it you're trying to do? Dealing with chemicals is a nasty business (MEK, et.al.), I try to avoid it at all costs. If you can find a way to dip the ends in a solder pot, you'd be much better off.

????? Scott

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#10587

Re: Stripping Magnet Wire | 15 July, 1999

| I need a good chemical to remove the lacquer finish off of magnet wire. I know there are different kinds but I need one that really works. Any suggestions would be great. thanks in advance guys. | Jeff: Scott's correct. Buy a mechical stripper from eraser er someone like that. Dave

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Greg Curler

#10588

Re: Stripping Magnet Wire | 16 July, 1999

| I need a good chemical to remove the lacquer finish off of magnet wire. I know there are different kinds but I need one that really works. Any suggestions would be great. thanks in advance guys. | Jeff,

We use a 725 F Sodium Hydroxide (Caustic Soda) bath to strip the varnish from our magnet wire. Nasty operation but works good.

Greg

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#10589

Re: Stripping Magnet Wire | 16 July, 1999

| | I need a good chemical to remove the lacquer finish off of magnet wire. I know there are different kinds but I need one that really works. Any suggestions would be great. thanks in advance guys. | | | What is it you're trying to do? | Dealing with chemicals is a nasty business (MEK, et.al.), I try to avoid it at all costs. If you can find a way to dip the ends in a solder pot, you'd be much better off. | | ????? | Scott |

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Jeff Sanchez

#10590

Re: Stripping Magnet Wire | 16 July, 1999

| | | I need a good chemical to remove the lacquer finish off of magnet wire. I know there are different kinds but I need one that really works. Any suggestions would be great. thanks in advance guys. | | | | | What is it you're trying to do? | | Dealing with chemicals is a nasty business (MEK, et.al.), I try to avoid it at all costs. If you can find a way to dip the ends in a solder pot, you'd be much better off. | | | | ????? | | Scott | | | Thanks Guys, Looks like I am back in biz. A short comment on the chemical thing Scott. I tried to use the solder pot to strip the wire but the pot would not go that high. so I put the solder in a crucible to get it up to temp (750-800F). That is way hot and I don't even know if the solder is any good after you use it at those temps.The pot also leaves burned laquere around the wire that you have to remove.All in all,It's a lot of work and you have a hard time passing that off on the price of the job. Chemicals don't scare me. Like anything else, when used improperly you just turn green.....lol. It just seems safer to use a chemical in this application. Thanks again guys......Jeff |

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ScottM

#10591

little green men | 17 July, 1999

| | | | I need a good chemical to remove the lacquer finish off of magnet wire. I know there are different kinds but I need one that really works. Any suggestions would be great. thanks in advance guys. | | | | | | | What is it you're trying to do? | | | Dealing with chemicals is a nasty business (MEK, et.al.), I try to avoid it at all costs. If you can find a way to dip the ends in a solder pot, you'd be much better off. | | | | | | ????? | | | Scott | | | | | Thanks Guys, Looks like I am back in biz. A short comment on the chemical thing Scott. I tried to use the solder pot to strip the wire but the pot would not go that high. so I put the solder in a crucible to get it up to temp (750-800F). That is way hot and I don't even know if the solder is any good after you use it at those temps.The pot also leaves burned laquere around the wire that you have to remove.All in all,It's a lot of work and you have a hard time passing that off on the price of the job. Chemicals don't scare me. Like anything else, when used improperly you just turn green.....lol. It just seems safer to use a chemical in this application. Thanks again guys......Jeff | | | | You're a much braver man than I, chemicals and the AQMD & EPA don't mix here in California.

Solder pot (temp controlled at 500F) vs. wire varnish strippers are dependent on wire size. Solder pot for small (say 16 gauge or less) and wire strippers for the stiffer stuff; used both. I don't recall the residue you discribed nor have I been able to note that as a defect in '610...

But if you have a lot to do, chemicals may be your answer but how do you neutralize the chemical after it's bath?

Curious, Scott

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Jeff Sanchez

#10592

Re: little green men | 17 July, 1999

| | | | | I need a good chemical to remove the lacquer finish off of magnet wire. I know there are different kinds but I need one that really works. Any suggestions would be great. thanks in advance guys. | | | | | | | | | What is it you're trying to do? | | | | Dealing with chemicals is a nasty business (MEK, et.al.), I try to avoid it at all costs. If you can find a way to dip the ends in a solder pot, you'd be much better off. | | | | | | | | ????? | | | | Scott | | | | | | | Thanks Guys, Looks like I am back in biz. A short comment on the chemical thing Scott. I tried to use the solder pot to strip the wire but the pot would not go that high. so I put the solder in a crucible to get it up to temp (750-800F). That is way hot and I don't even know if the solder is any good after you use it at those temps.The pot also leaves burned laquere around the wire that you have to remove.All in all,It's a lot of work and you have a hard time passing that off on the price of the job. Chemicals don't scare me. Like anything else, when used improperly you just turn green.....lol. It just seems safer to use a chemical in this application. Thanks again guys......Jeff | | | | | | | | You're a much braver man than I, chemicals and the AQMD & EPA don't mix here in California. | | Solder pot (temp controlled at 500F) vs. wire varnish strippers are dependent on wire size. Solder pot for small (say 16 gauge or less) and wire strippers for the stiffer stuff; used both. I don't recall the residue you discribed nor have I been able to note that as a defect in '610... | | But if you have a lot to do, chemicals may be your answer but how do you neutralize the chemical after it's bath? | | Curious, | Scott | Scott, I will check out the options. The site that Dave gave a link to apears to have a varnish stripper? At least that's what I think I saw? I would like to look at that further. I really don't know how many of these I will do for this customer in the future so I am hesitant to put out a lot for equipment that will catch some dust. As for that residue you commented on. It is the result of the varnish burning away from the copper wire and clumping at the top. I did like the fact that dipping it in solder removed the varnish and tinned the wire at the same time. But it just didn't look that nice. So I want to look at all my options.............Jeff

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Scott

#10593

Re: little green men | 17 July, 1999

| | | | | | I need a good chemical to remove the lacquer finish off of magnet wire. I know there are different kinds but I need one that really works. Any suggestions would be great. thanks in advance guys. | | | | | | | | | | | What is it you're trying to do? | | | | | Dealing with chemicals is a nasty business (MEK, et.al.), I try to avoid it at all costs. If you can find a way to dip the ends in a solder pot, you'd be much better off. | | | | | | | | | | ????? | | | | | Scott | | | | | | | | | Thanks Guys, Looks like I am back in biz. A short comment on the chemical thing Scott. I tried to use the solder pot to strip the wire but the pot would not go that high. so I put the solder in a crucible to get it up to temp (750-800F). That is way hot and I don't even know if the solder is any good after you use it at those temps.The pot also leaves burned laquere around the wire that you have to remove.All in all,It's a lot of work and you have a hard time passing that off on the price of the job. Chemicals don't scare me. Like anything else, when used improperly you just turn green.....lol. It just seems safer to use a chemical in this application. Thanks again guys......Jeff | | | | | | | | | | | | You're a much braver man than I, chemicals and the AQMD & EPA don't mix here in California. | | | | Solder pot (temp controlled at 500F) vs. wire varnish strippers are dependent on wire size. Solder pot for small (say 16 gauge or less) and wire strippers for the stiffer stuff; used both. I don't recall the residue you discribed nor have I been able to note that as a defect in '610... | | | | But if you have a lot to do, chemicals may be your answer but how do you neutralize the chemical after it's bath? | | | | Curious, | | Scott | | | Scott, I will check out the options. The site that Dave gave a link to apears to have a varnish stripper? At least that's what I think I saw? I would like to look at that further. I really don't know how many of these I will do for this customer in the future so I am hesitant to put out a lot for equipment that will catch some dust. As for that residue you commented on. It is the result of the varnish burning away from the copper wire and clumping at the top. I did like the fact that dipping it in solder removed the varnish and tinned the wire at the same time. But it just didn't look that nice. So I want to look at all my options.............Jeff | But does that residue constitue a defect? And will your customer complain? I'm constantly fighting with my inspectors about "it doesn't look good" when a componentt isn't "straight and proper" but is perfectly legal with IPC-A-610 Rev.B Class III....

I went to a factory tour where they were wave soldering with RMA flux and they didn't do ANY cleaning (there wasn't a cleaner anywhere on the production floor!). Looks like crap but the ME said "who cares, they won't see it anyway... and by the time the flux starts to be a problem, the product will be sitting in a land fill...". And this is from a world class laptop manufacturer.

Using the wire strippers does create a bit of dust but they're fun to use (three spinning blades) though not very fast so if you have a lot to do...

Cheers, Scott

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