yes.
At 01:59 PM 8/10/00 EDT, you wrote:
>Hi all!
>
>Been trying to dial a profile in on the wave today with a board that's fairly
>thick, probably around .090", polyimide, all PTH with a fair amount of the
>IC's being ceramic. We use a spray fluxer and a RMA flux.
>
>The first boards have been coming off without the preferred topside fillets
>at a number of locations. I've been playing with the pre-heat, belt speed,
>and even did something that I don't like to do, which was to flux the topside
>of the board.
>All to no avail...I still had quite a few places that didn't have topside
>fillets, and that is something that doesn't go over well here at all.
>
>I started noticing that the places that didn't have topside fillets were at
>the same locations. So I came back to my 'pooter and looked at the gerber for
>the board. What's really weird was that everyplace there's a thermal for a
>pin is where I have no topside fillet??? I thought that thermals were
>supposed to help prevent that from happening? But it's true, every single
>place there is a thermal= no top solder. Has anybody ever seen that before?
>
>-Steve Gregory-
>
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