Electronics Forum | Fri Feb 15 12:29:35 EST 2013 | mikesewell
What foil thickness? Type 3 or 4 paste? Have you checked your area ratio(s)? You could overprint or drop your foil thickness by one mil to improve the ratio and paste transfer. As always you can search the fine SMTnet archives for more info.
Electronics Forum | Mon Feb 18 12:09:17 EST 2013 | pbarton
What type of flux material does your solder paste have? I have seen difficulties when attempting to print small apertures with water washable and rosin types. Do you get a good first print and then have problems or is it the same from the start?
Electronics Forum | Fri Apr 04 18:08:26 EDT 2008 | comatose
We are a small OEM that runs a high mix/low volume environment. Typical runs are a couple or five hundred boards, one or two products per day. Currently, we are using a Quad DeHart SLC-20 semi-automatic stencil printer. (alignment is manual, printing
Electronics Forum | Wed May 16 01:06:38 EDT 2012 | bwjm
Hi Before I say anything I ll qualify who I am. I > work for a AOI/SPI manuafacturer > > Automatic > printer is your best option for small > runs. Print process is responsible for a vast > number of solder defects and improving here is > your b
Electronics Forum | Sun May 27 19:51:00 EDT 2012 | darby
Seeing as you say you only have a small amount of cash ... I'd also consider a semi-auto printer where you align a golden board, set up the two cameras by boxing or overlaying a pad etc, and then use the vernier adjustment to get each pcb to align wi
Electronics Forum | Sun Feb 15 17:32:08 EST 2004 | brian bennett
i have always found any of the alcohol based solvents good.here in the uk we use the alpha make.with screen auto wipes i found the set up to be most important.i.e how many pcb's printed before wiping.i found running pcbs with bga and .50 pitch compo