Imdes Jumbo vapour phase oven

[trevwhite]

But that means you have to stand there waiting for it and remove at the right time. With the Imdes oven you can just put the boards in and do other stuff and forget about it.

[wraper]

But that means you have to stand there waiting for it and remove at the right time. With the Imdes oven you can just put the boards in and do other stuff and forget about it.

If you wait too long, you will get PCB covered with galden as it starts dropping of the lid. I'm thinking buying container like this https://www.horeca.com/en/product/62099/hendi-gastronorm-container-1-1-200mm-28-liters and adding heater on the bottom (already 80% of what my IMDES mini  is + adding some cooling on the top part of the container to stop vapors from reaching the lid by condensing them below. Water cooling loop is one option. But I think I probably could attach long heatsinks to the container and put blower fans to push air through them. Dunno how well it would work though.

[trevwhite]

Wraper: The problem is it all takes time and sourcing of parts and experimenting. The Imdes needed a bit of tweaking but is okay, it kind does it.


As for the drops on the board, this is a bit of a pain and am not sure of a solution yet. But for small batches of prototypes/production I think its not a serious issue. I have not experienced it with my limited use as being a major problem. Have you had a lot of droplets on boards?


Trev

[Marsupilami]

Wraper: The problem is it all takes time and sourcing of parts and experimenting. The Imdes needed a bit of tweaking but is okay, it kind does it.

↑ That right there. ↑

But I agree that it's totally doable DIY.
What's wrong with the drops? I haven't had that problem but I don't understand why would it even be an issue? Is the concern that drops would knock parts before the solder solidified or why? 

[wraper]

Wraper: The problem is it all takes time and sourcing of parts and experimenting. The Imdes needed a bit of tweaking but is okay, it kind does it.

↑ That right there. ↑

But I agree that it's totally doable DIY.
What's wrong with the drops? I haven't had that problem but I don't understand why would it even be an issue? Is the concern that drops would knock parts before the solder solidified or why? 

You get wet boards covered with galden drops. If a top lid became dirty enough after many reflows, those drops will be also contaminated with burned flux vapors. If they get onto PCB before reflow, you will have brown uncleanable gunk cooked onto it.

[Marsupilami]

I haven't seen drop forming condensation on the lid during the cycle, only well into cooldown. It might be different though for larger sizes or depending on the lid surface / geometry.

[trevwhite]

I use a cheap window wiper from Amazon that cost £2. After each run I clean the lid. I didn't experience much issue. I think I did something and one board got dropped on but it was not a problem and no lasting residue.


 

[trevwhite]

If he now has it made, ask for a discount and see what you can do.