Jim,
As in Steves case we also use cartridges, only we use 250gram size due to
the low ongoing volume. Our vendor tells us that they don't sell too many
250gram sizes compared to the 600gram. The best I know says that the 250gram
is the smallest in cartridge form. I do like the idea of the bag as someone
else mentioned earlier. As for the 'out of the refer' issue, best bet is to
check with the mfgr of the paste. If you are using jars, there is also the
mixing required when you use it and that will most assuredly get the
environment in the middle of things.
Good luck!
Richard Hamilton
Clemar Mfg. / Rain Bird
[log in to unmask]
> -----Original Message-----
> From: Stephen R. Gregory [SMTP:[log in to unmask]]
> Sent: Wednesday, February 23, 2000 3:06 PM
> To: [log in to unmask]
> Subject: Re: [TN] Solder paste refrigerated after the container is
> opened.
>
> In a message dated 02/23/2000 3:40:31 PM Central Standard Time,
> [log in to unmask] writes:
>
> << Hi Techneters,
>
> This questions is mostly geared towards the small manufacturers that does
> not use that much paste, but all comments are welcomed. Most
> manufactures
> recommend you store your paste in a refrigerator and keep the temperature
> at
> 32-50°F. We do this, but since we do not use that much paste, we will
> open
> a jar and apply the required amount of paste on our stencil. Our biggest
> production amount only requires us to apply paste to our stencil maybe
> twice
> or three times a day. I was told by an outside source that once we open
> the
> jar of paste we can not put it back in the refrigerator. One reason they
> said was we are exposing the paste to the air and once this happens you
> need
> to use the paste ASAP. That's a problem for us since we do not use that
> much to begin with. Currently, we will open the jar and take what we
> need
> and then put the jar back into the refrigerator, it may be two days
> before
> we need to use the paste again. How do the small shops handle their
> paste?
>
>
> Thanks in advance,
>
> Jim West >>
>
> Hi Jim!
>
> Most paste manufacturers also supply the paste in syringes of various
> sizes
> (for instance I get mine in a 600 gram tube), that are mainly for printers
>
> that have a auto dispenser. I don't actually use the auto dispenser on my
> printer (we don't run big enough jobs to use it). But what I do have is a
> caulk gun (got it at the hardware store) that I put my solder paste tube
> in
> to dispense my paste with...works great too, the diameter of the opening
> at
> the end of the tube is about as big around as your thumb (the same size as
>
> the bead of paste that you want in front of your squeegee) and after I
> dispense the paste on the stencil, I screw the plug back in the end of the
>
> tube and put it back in the refridgerator.
>
> The only paste that was exposed to the air is the paste that I pumped
> outta
> the tube. I like the tubes or syringes for another reason too, discourages
>
> you taking paste that's already been out on the stencil and then putting
> it
> back in the tube (you could do it I suppose, but not without making a big
> mess). With a jar, something like that is easy to do....
>
> -Steve Gregory-
>
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