Electronics Forum | Wed Jun 27 15:21:28 EDT 2001 | H.Richter
Hello; Can anyone give me advise on the best way to manually align a 20"x20" stencil on a semi-automatic printer? We have a board with a 16 mil pitch QFP and have difficulty aligning the stencil. We have tried various alignment schemes on the pcb an
Electronics Forum | Tue Jun 01 00:21:11 EDT 1999 | Lance Smalley
After lots of years with Panasert machines, I am starting to need to learn again. 1. For the AP-20 can you retrofit 3D vision? Would you bother? 2. Also for the AP, can you use 20x20 DEK screens with an adapter? Thanks to all you MPM experts. Lance
Electronics Forum | Tue May 03 12:28:45 EDT 2005 | jh0n!
I hate to start to drag this off-topic, but I just had someone here interject that perhaps going to 20x20 and using a different adaptor would be the way we should go, due to the cost difference. Can you (or anyone) quickly identify a few reasons why
Electronics Forum | Fri Jul 22 16:42:50 EDT 2005 | campos
hello all, I�m experiencing problems with "warped" boards after first reflow, some of them i just can�t print side two due to this problem,,is it related only to reflow? i�m using a linear profile (225� peak / 70s time above) with a tin lead paste,t
Electronics Forum | Thu Feb 25 10:54:03 EST 2010 | duanebrayton
We are a small Contract Manufacturer and have received a project which has BGA's on top & bottom. 2 larger BGA's on one side (~_20x20mm) & 3 smaller BGA's (~_8x8mm) on the other. we plan on running the side with the smaller BGA's first but need som
Electronics Forum | Fri May 14 12:44:26 EDT 2010 | padawanlinuxero
Hi Since we are a small company with a small smt line, we did not have problems with our stencils because they are small and could clean them with Alcohol and wipes, but now we are growing, and now I am having a 20X20 stencils frames to deal with,
Electronics Forum | Mon Jan 27 07:28:24 EST 2020 | dontfeedphils
If I'm remembering correctly, I just had a board shop I worked with supply me with a 20"x20" copper laminated piece of FR4 and used that. I believe I only used it once before I left that company, so I'm not sure how well it holds up over time.
Electronics Forum | Fri Dec 17 18:21:43 EST 1999 | Clarissa L. Ortner
We are a small start up. We will be buying a stenciling machine and semi automated pick and place. ( We have the oven) We are presently stenciling without any assit and loading leadless parts only(no fine pitch) by hand. We need to improve thrupu
Electronics Forum | Fri Oct 25 14:46:50 EDT 2002 | russ
Leading edge, This is used to determine the orientation of the board as you want to run it. If you use center justified stencils this is usually not an issue since you can just turn the stencil any which way you want to. If you are using front/rear
Electronics Forum | Tue May 02 16:37:57 EDT 2006 | bhall
I have experienced the exact same problem with excess solder touching the plastic component body. The solution in my case was simply to replace the stencil. I was using a reusable stencil frame that had been worn out. I replaced the stencil with a so
