Electronics Forum | Tue Jan 23 15:20:59 EST 2007 | stepheniii
On the Ekra those are called top clamps AKA finger slicers. With the Ekra side clamping means there is nothing on the top of the board. Does your printer have true side only clamping? Or do you need the top finger slicers for the grid-lok to work r
Electronics Forum | Tue Jan 23 17:32:53 EST 2007 | russ
if you cannot spend any money I would say that you either need to add rails or try to increase the squeegee pressure to hold down the stencil while it prints those close pads. But...... Can you put PCB onto some type of carrier that would move thes
Electronics Forum | Wed Jan 24 08:22:18 EST 2007 | cyber_wolf
Turning off the grid-lok is not an option. I have used the hand inserted tooling in the past..It takes too long to set up and it does not accomodate warped boards. So I am I safe in saying that there is not much I can do aside from change my board d
Electronics Forum | Wed Jan 24 11:22:46 EST 2007 | pr
Do you still have the vacuum plates in? If so, you can set the grid-lok up in the "fixed mode" (not sure what they call it,where it won't set for each board), then you could run without side clamps and the Vacuum should be enough to keep it from movi
Electronics Forum | Fri Jan 26 14:48:38 EST 2007 | CL
I agree, There seems to be quite a bit of negative impression regarding Grid Lok. We have 4 DEK printers outfitted with them. We have had a few problems that were due to warped boards but other than that, they have worked well for us. Fixed tooling
Electronics Forum | Wed Jan 24 21:29:43 EST 2007 | davef
Board fabricators commonly use Barco AOI to inspect film. The AccuMatch compares pixel-to-pixel of the Gerber data to the image seen by the AOI camera. It's slower than design rule checking, but has definite advantages [like lower falsing]. Unfortu
Electronics Forum | Thu Jan 25 04:55:08 EST 2007 | greg york
Strange as we have had huge problems with Silver in Many different Assembly houses. Mainly with Nitric Acid based Silvers causing blow holes, non wetting and even the Nitric etching away the tracks on fine boards. It has been one of the main problem
Electronics Forum | Fri Feb 02 12:37:16 EST 2007 | Derek W
We've had the same issues with silver. We also ran into shelf life issues but that's specific to our business. We've moved to ENIG with good success, our board vendors were also very happy to move away from silver though I'm not sure why. As long as
Electronics Forum | Sun Feb 25 03:49:17 EST 2007 | frank63
Dear SMT community, thank you all for your comments and valuable hints. I am newcomer here and impressed about the feedbacks! We have made a new lot of 25 pcb with total 200pcs of (leaded) BGA, whith slightly higher temperature profiles ~210�C
Electronics Forum | Sun Feb 25 11:59:33 EST 2007 | stepheniii
Just make sure you keep the half done assemblies in dry storage or do the second reflow within the time dictated by the BGAs MSD rating level. Maybe this time you did the second side with a very short wait because you were anxious about the results
