Any interest in a CREE LED solder paste stencil?

Got mine today, looking good. Thanks pyro!

If so, I’d like a couple of em. Shoot me a pm with your paypal addy and you can get those uniformed donut munchers back on the trail.

Great idea, thanks bunches of tiny suspended molecules of solder.

Looks like all the stencils from the first batch are gone. I’ll wait for some feedback from the suckers wise buyers before doing another run.

Thanks texaspyro. I received the items yesterday in perfect shape. They look real good. Cheers.

Wow, that took a while. Most other places in upside down parts of the known universe only took a few days.

I think there has been a strong updraft lately which always slows things getting to that place called down under. Lets blame global warming for this. I’m sure the post hates it as much as I do.

I will take at least two of these if you do another run.

Yeah, mark me down for a couple XML and a couple XPG if you do these again.

Thanks!

I have put the solder paste stencil up on OSHPARK.COM as a shared project. Download the .BRD file and send it to OSHSTENCILS.COM You will probably have to order two to meet their minimum order. When ordering, specify their minimum sized border (0.75”). Note that I have changed the MTG center pad from the original solid block. Also removed the solder mask from the solder overflow tabs.

http://oshpark.com/shared_projects/dw8NYoED

just ordered 2, ~$10 shipped

thanks for doing this

just arrived

very easy, very fast, very nice, thanks!

I’m new to oshpark. I found your shared project, but why download the .BRD file? Why not just hit the order button? What am I missing here?

This pattern is just for making solder paste stencils, which OSHPARK does not do. You download the .BRD file and send it to oSHSTENCILS.COM to get the stencils made. The stencil is used to manually apply solder paste to LED MCPCB’s (stars).

You could have OSHPARK make a board from this pattern, but it would not be of much use.

Good thing I didn’t hit the order button :bigsmile:

So glad to have stumbled across this. Now I know how I can get stencils for the triple xml build, yahoo!

Just successfully re-flowed my first LED. Put an XML2 and a new driver into my old Regalight EDC AA size light. Much better. :bigsmile:

Thanks. Which is a good brand of solder paste for this?

I used this solder paste from Fasttech.

It’s apparently a low melting temp solder. Mine melted somewhere around 250f. I wasn’t paying close attention to the exact temp, because I thought it would be closer to 360f.
I used this AOYUE 866 All in 1 SMD/SMT Hot Air Rework & Soldering Station with Pre-heater.

I did have the thermocouple on the MCPCB as it was warming up on the preheater, but I saw the solder melt a lot sooner than I expected.
I’ll do a few more to get a more exact melting point. :bigsmile:

Edit- I just did another one and kept a closer watch on the temperature. The solder liquified and the LED floated into alignment between 300-310F.

My sample of that mechanic solder paste from fasttech melts at about 180-190°C (356-374°F) as expected for Sn63 / Pb37.

Nice to know they’re there and waiting, I have 1 sheet I haven’t used yet, but who knows when I’ll mess up and kill off my stencils. Easy enough to order new ones this way, Thanks TP.

These have made modding an easy task instead of a daunting project!