On Mar 26, 2009, at 3:46 PM, solarwind wrote:

>
> * Also, do you recommend closed ovens or open type frying pans/ 
> skillets/etc?

I don't think I'd use a skillet.  I've used a lab-grade hot plate such  
as might be used for heating a beaker and a common variety toaster /  
convection oven.  BTW NEVER use the oven for food once used for  
soldering.

>
> If the components I purchased/sampled did NOT come with a flashy
> sticker telling me to pre-cook the chip before reflow soldering, do I
> HAVE to cook it or can I go straight to the reflow soldering? I think
> my parents would kill me if I left an oven on for 24 hours...

Never done that myself.  Utah, where I live is exceptionally dry.  The  
humidity stickers that are in the bag with the desiccant pack usually  
stay around 10% - below the worry range that might require baking.

>
> Is the solder paste really toxic? I think it should be ok if I use
> some medical-purpose gloves, no?

Well, yes it is toxic since it contains lead.  There may be some other  
nasties in the paste as well.  Just wash your hands prior to eating /  
drinking / smoking, etc.  I've been playing with electronics since I  
was a kid, and there was a time when I'd use my teeth as a 'third  
hand' to hold the solder.  I don't do that any longer, but I don't  
take any special precautions other than washing my hands and ensuring  
good ventilation.

>
> All in all, do you (to everyone) recommend reflow soldering or normal
> hand soldering? Is homebrew reflow soldering worthwhile, in your
> opinion?
>

SMD soldering is tedious to solder with conventional tools and solder,  
though it is certainly possible.

> And solder paste seems to be expensive...

It certainly is.  (And wait till you try lead free!  A whole new game!)

For my hobby stuff, I still try to use through-hole components unless  
otherwise unavailable.

Joe

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