Electronics Forum | Mon Jan 18 17:58:09 EST 1999 | marc p
| I have a severe problem with flux residue being drawn up the vent ducts of my reflow oven. This residue reaches a critical mass then begins to flow down the ducts and becomes very messy. I run a no-clean process and use IR oven. Has anyone else o
Electronics Forum | Fri Dec 27 12:53:38 EST 2019 | rgduval
yeah...I never had airflow volume problems with Hellers. When I had to build the system I was referring to, we had an old Speedline oven, and the way it was configured if you didn't provide enough airflow to the outer cavity, the blowers would overh
Electronics Forum | Thu Dec 26 17:21:18 EST 2019 | rgduval
If you're going to vent through a single exhaust/fan combo, I would recommend spending the money, and getting an HVAC company in there to size the exhaust fan, and duct work. It'll pay dividends for you in the future. We did that at a previous comp
Electronics Forum | Thu Mar 16 14:24:54 EST 2006 | cyber_wolf
Find out what the exhaust draw requirements are and talk to a HVAC expert. They should be able to tell you what size fans and duct work you need for your oven. They can also calculate how much draw you have with your current set up.
Electronics Forum | Mon Jun 22 16:04:04 EDT 2020 | cyber_wolf
Using steel/aluminum duct work causes a radiator effect. Our Heller's have flexible rubber tubing coming off both ends that feed into a T above them. Just measured them at 57C on PbFree Profiles
Electronics Forum | Mon Feb 28 16:47:26 EST 2005 | jdengler
John, No vacuum. I use tape to hold the flex flat. Panels are hard. Some flexes I do 3 up some 1 up. Larger components that I can get a repeatable location of the flex are 3 up. 0805 and smaller are 1 up always. I talked to a flex house once a
Electronics Forum | Sat Dec 28 06:58:33 EST 2019 | kylehunter
> yeah...I never had airflow volume problems with > Hellers. When I had to build the system I was > referring to, we had an old Speedline oven, and > the way it was configured if you didn't provide > enough airflow to the outer ca
Electronics Forum | Mon Dec 20 10:11:39 EST 1999 | Chris
Does anyone have an underfill for flip chips which works well on flex circuits made of Kapton? Thanks, Chris
Electronics Forum | Thu Jan 07 18:20:08 EST 1999 | Ryan Jennens
Congrats, Steve!!!! There was never a doubt in my mind that you would get it. By the way, do you have any ideas how I could solder this BGA down when all I have to work with is a roll of duct tape, a swiss army knife, some fertilizer and
Electronics Forum | Tue Sep 18 09:47:36 EDT 2001 | jseagle
Have all the issuses been worked out of FormFlex? What makes FormFlex better than Grid-Lok? I am considering purchasing a DEK ELA printer with the option. James
