Electronics Forum | Wed Mar 14 07:30:14 EDT 2007 | davef
So, you toss whatever is on the stencil every 8 hours. Correct? How long has it been on the stencil? * If that particular paste has been on the stencil for 8 hours, we'd agree to toss it too. * If paste has been on the stencil for less than 8 hour
Electronics Forum | Wed Mar 14 00:44:22 EDT 2007 | Yngwie
Thanks for the reply Dave. :) No, we dont toss in 500g on the stencil. Have you heard of any method to convert the solder paste to solder bar, just in case someone have done that before? Thanks.
Electronics Forum | Mon Mar 05 12:45:51 EST 2007 | Hussman
Syringe is a good plan. You may need to buy some pnuematic guns to push ou the paste thuogh. Instead of melting the paste down, have someone reclaim for you. They pay you for it. Sorry Maint Managers - gave away your secret.
Electronics Forum | Wed Mar 14 11:24:32 EDT 2007 | Scotceltic
Have you thought about switching to either automatic paste dispensers or rhemoetric pumpheads in order to contain the paste and only dispense what is needed during your shift ? I am not sure what type of printers you have, but I know both of these o
Electronics Forum | Mon Mar 05 18:20:44 EST 2007 | ratsalad
We buy our paste in Semco cartridges. You don't need a pneumatic gun to administer the paste to the stencil, just use a caulk gun which you should be able to purchase at your local hardware store. The cheap ones are about $2 (US). We have green
Electronics Forum | Wed Mar 07 08:37:29 EST 2007 | davef
First, don't put solder paste in a wave solder pot, the 50% by volume of organics and volatiles will gas off in an astonishing amount of fume, leaving a dismaying mess of spent resin and molten plastic in your pot. Second, when you say, "Paste that
Electronics Forum | Wed Mar 14 09:44:06 EDT 2007 | Cmiller
We use cartridges, that way nobody can mix back in paste off the stencil and no air can get in period. Any paste that is still good to use when removed from a stencil at the end of a job is put into a small pink zip-lock baggy with the date written o
Electronics Forum | Tue Mar 06 09:01:17 EST 2007 | Rob
Yes, looks great - had a play at one of their roadshows. Could turn into an amazing product if they can scale it down enough. However, it's slow and costs more than a large house. More than a screen printer and a huge number of stencils.
Electronics Forum | Thu Jan 28 08:42:43 EST 1999 | Dave F
| i am working with the noclean process and getting white residues on the bottomside of the board probably due to the | wave soldering flux.i am using a no-clean solder paste and a noclean wave solder flux.The boards passed the accelerated temperatu
Electronics Forum | Fri Nov 03 09:41:17 EDT 2017 | davef
On your question about reliability ... " Is there testing we can do (environmental stress chambers) with which we can see the long-term effects of flux residue on solder joints?" Sure, incompletely activated low residue flux residues are potentially
