Any interest in a CREE LED solder paste stencil?

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nickelflipper
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texaspyro wrote:
Also, I was using some pretty “low tack” masking tape to hold the stencil in place. If your tape is too aggressive you might damage the stencil when removing the tape.
aka “drafting” tape.

Kent

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texaspyro wrote:
Also, I was using some pretty "low tack" masking tape to hold the stencil in place. If your tape is too aggressive you might damage the stencil when removing the tape.

For sure - Kapton is tough, but if you manage to get a rip started, it will peel down like a banana..

Blue painter's tape is about perfect.

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relic38
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I was thinking that blue low-stick painter’s tape would be about right. Blank FR4 PCBs are about the same thickness (~1.65mm) as the star. I will take a spare one, trace around the star onto it and cut out a same-diameter hole. Tape the board down, set the star in the hole, and lay the stencil over it; no sagging, and the star will stay put.

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texaspyro
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Just for fun, I pasted 6 XRE’s in under a minute. Took a couple more minutes to torch them… all worked fine.

relic38
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PilotPTK wrote:

Relic Smile  You Closet Zilog user Smile


What gave me away? Big Smile

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relic38 wrote:
PilotPTK wrote:

Relic Smile  You Closet Zilog user Smile

What gave me away? :D

The Zilog Motion Sensor PCB Under your Noctigon Smile

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PilotPTK wrote:
For sure – Kapton is tough, but if you manage to get a rip started, it will peel down like a banana..

How many uses do Kapton stencils usually last? With these kind of pads I mean.
The long thin strips between pads seem like they would fragile.


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Be gentle and they'll last for dozens or hundreds of prints.  Like I said, kapton is tough, just don't get a tear started..

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texaspyro
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BTW, wipe the paste in the direction of the length of the slots, not across them. That will greatly minimize the chance of tearing out the material.

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I’ve got an XP-G2 waiting for a star swap for Ezarc. I think I’ll wait until this is ready. The few XML’s I’ve done were nerve racking enough. It looks so horrible when you put the solder paste on that you think there is no way that will work but somehow they all have. Smile

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

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I wonder how applying like grout(scrape diagonally across pads) would work. It seems similar but on a much smaller scale.

Three Tanna leaves to give him life, nine to give him movement. But what if he eats the whole bag?

Scott

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OK, I have 18 stencils available from the first run. Cost is $3 each shipped in the US. International add $1 to the total amount for postage.

They will be shipped in a standard letter envelope, no tracking… you pays your money, you takes your chances. If you need tracking, cost goes up to stupid levels… I think that the cheapest postage rate with international tracking is over $10, plus it draws the attention of nosey, sticky fingered customs agents…

First come, first served… I’d like to get some feedback on these before doing another run.

PM me for my paypal address… say how many you want so I can track the quantities and include your address.

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Are you sure you’ll be doing another run?


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texaspyro
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Helios- wrote:
Are you sure you’ll be doing another run?

No, it all depends upon the interest… I have to buy a full sheet of material and it does 22 stencils. Kapton is expensive stuff (over $300/pound)

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I’ll take one.

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Pp sent and thanks Texaspyro. Think I’ll make a wood block mortised for different mcpcb’s.

Three Tanna leaves to give him life, nine to give him movement. But what if he eats the whole bag?

Scott

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Probably a dumb question, but are these only for use with solder paste?

The low mode should be lower.

texaspyro
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leaftye wrote:

Probably a dumb question, but are these only for use with solder paste?

I suppose you could use them with toothpaste… but yeah, gotta be some kind of paste…

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I’ll take two if thats ok. I dont have your pay pal address.

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

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Bump for the pyro

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

texaspyro
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For those that have paid, I have dispatched uniformed government couriers with your stencils. They should be there soon… unless there are donut shops along the way…

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leaftye wrote:
Probably a dumb question, but are these only for use with solder paste?

If your looking for inexpensive solder paste FT has it for $3.28 Solder Paste
Lowest I’ve run into.


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relic38
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Helios- wrote:
leaftye wrote:
Probably a dumb question, but are these only for use with solder paste?

If your looking for inexpensive solder paste FT has it for $3.28 Solder Paste
Lowest I’ve run into.

Not in a syringe, should be fun to work with. Maybe I’m spoiled though, haven’t tried spreading solder paste out of a jar yet.
I guess with the stencil it will not matter much.

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relic38 wrote:
Maybe I’m spoiled though, haven’t tried spreading solder paste out of a jar yet. I guess with the stencil it will not matter much.

Works quite well. Easier than a syringe. Just scoop up a little on the edge of the spreader card and spread it. After each application, use another piece of the card to move the paste back to the edge. Lather, rinse, repeat.

I tested the stencils with that exact same paste… I didn’t want to thaw out my Kester. You could do Sagans and Sagans of stars with that little jar… a little goes a loooong way when you are applying .003” thick layers.

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Got my stencils today. Big Smile Thanks TP.

Three Tanna leaves to give him life, nine to give him movement. But what if he eats the whole bag?

Scott

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Rufusbduck wrote:
Got my stencils today. Big Smile Thanks TP.

^^ what he said.

Thanks!


 

texaspyro
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Rufusbduck wrote:
Got my stencils today. Big Smile Thanks TP.

Now, get thee down to some LED stickin’ downin’ …

relic38
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Got mine today, looking good. Thanks pyro!

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DB Custom
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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.

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