Electronics Forum | Fri Mar 04 11:00:37 EST 2005 | mrduckmann2000
Anybody have any ideas on the proper way to screen solder mask onto a PCB? I am going to cover SMT parts that were soldered to the btm side of the PCB, now I have to mask them in order to run this animal through the wave solder process. I know it w
Electronics Forum | Sun Mar 06 20:12:53 EST 2005 | mrduckmann2000
Russ, I didn't use a stencil for my experiment because I was not sure that the solder mask idea would work. Now that I have treid a few experiments I feel dangerous! LOL. I will not have to use a step stencil, I will just mask all the parts. Lik
Electronics Forum | Fri Apr 21 00:56:44 EDT 2006 | pavel_murtishev
Good morning, MPM AP25 we have is equipped with dedicated vacuum support only, no side snuggers. Also we had a lot of issues with fine pitch paste deposition due to this poor support. Vacuum support can�t fix wrapped boards properly causing a lot of
Electronics Forum | Thu Oct 28 21:29:56 EDT 2004 | KEN
Great! I have heard good things about value machines. Have fun printing.
Electronics Forum | Thu Apr 29 16:58:00 EDT 2004 | pjc
You should be able to get a one-print Mylar frame for the SMTech 90 machine from SigmaPrint, http://www.sigmaprint.co.uk Yes, with vision you store images of two features such as solder lands or fidicial marks from opposite corners of the board. With
Electronics Forum | Mon Dec 29 08:54:46 EST 2003 | pjc
SPM is superior. SPM has larger print area, up to 20� x 19", vs. 17.7� x 15.7� for the UltraPrint 100. UP100 is microprocessor controlled while the SPM has a PC. The SPM cameras can be positioned more rapidly and with greater accuracy than UP100's.
Electronics Forum | Mon Apr 19 15:27:05 EDT 2004 | pjc
The MicroFlex is not really new. Its the UltraPrint 100 re-engineered and improved. UltraPrint 100 / SMTech 100 has been around for many years. I don't believe the DEK 248 offers a Stencil Wiper option. I worked on MicroFlex machines. Vision system i
Electronics Forum | Mon Apr 26 08:15:37 EDT 2004 | pjc
MPM uses a one-print-Mylar system, as do other printer mfrs. In this system there is a Mylar sheet attached to a frame that is secured over the printer table with the board on it. You print onto the Mylar. The table X-Y-theta manual adjustments are u
Electronics Forum | Thu Apr 29 10:49:05 EDT 2004 | pjc
Yes, using an illuminated magnifing glass helps. How well your board fixuring is on the table will effect print alignment on other boards loaded. 0.5mm & 0.4mm will require very good fixuring, like you can get with tooling pins if the board has non-p
Electronics Forum | Thu Apr 22 14:31:03 EDT 2004 | northern
I have used both the MPM and DEK. The MPM's look nicer and have a few fancy features but the DEK printed more consistent time and time again. I believe you spend a lot more money for MPM's when DEK will give you what you need.
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