Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


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Steve

#34976

wave solder bean bags | 15 June, 2005

There used to be a product simply called bean bags that you put on a pcb to keep components from lifting up during the wavesolder process. Any one know where I might find this product?

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RDR

#34977

wave solder bean bags | 15 June, 2005

Always made my own. I am a shotgun reloader so I used lead shot and pantyhose.

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#34979

wave solder bean bags | 15 June, 2005

Hi Russ, Very innovative are you planning on reloading lead-free any time soon?

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Steve

#34980

wave solder bean bags | 15 June, 2005

Call me Stupid? no, don't but wouldnt the "Panty Hose" melt under the heat conditions?

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RDR

#34981

wave solder bean bags | 15 June, 2005

No you're not stupid, they will melt if the top of the board gets real hot. I was lucky most likely in that ours were usually off of the board surface. anything that will hold the weight material will work. Now that I think about it my shot bags would probably be perfect. 25 lbs of shot in one canvas bag $16, no more tilted/lifted components, priceless.

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RDR

#34982

wave solder bean bags | 15 June, 2005

Been loading lead free (steel, bismuth) for a couple of yrs. now. Our Wildlife division went ROHS on the waterfowl hunting some time ago. So now we just wound geese and ducks and let them die somewhere that they are of no use except coyote food!

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#34990

wave solder bean bags | 15 June, 2005

Steve, A company called Bearwear, Inc. is who I refer my customers to. They will make any size and any weight you want. Prices are reasonable to. Give me a call if you want there number

Chad Pentagon EMS 503-924-2747

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#34993

wave solder bean bags | 16 June, 2005

Buy ESD safe gloves cut the fingers off and fill with buckshot and use plastic tie wraps to tie them off. No the tie wraps will not burn.

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KEN

#35016

wave solder bean bags | 16 June, 2005

I have These. Good guality. The black leather helped increase our quality level.

(kidding)

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Mike F

#43246

wave solder bean bags | 9 August, 2006

Am I missing something here? I usually put some type of stiffener or support on the leading edge to make sure the PWB doesn't sag in the middle from the preheat. If I had to add a bean bag with shotgun pellets or BB's I would have boards falling out of the fingers.

When I made bean bags I usually found one of the operators that could sew, bought some medium weight white cotton cloth, heavy thread, and something light to stuff it, and had the bags made to the size I needed. I rarely needed much weight to keep the problem parts down, and kept the bag as small as I could so it would not block the topside heater any more than I had to. On one really small bag (less than 2" x 2") I used BB's, but the bag was close to the leading edge and an edge stiffener kept the board from sagging too much. The cotton takes the heat well, and it's cheap enough to replace if it gets dirty or damaged. You want a middle weight cloth, a thick cotton or canvas is too stiff and just sits on top of the tallest part, and thin cotton falls apart too soon.

Mike F

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#51903

wave solder bean bags | 26 September, 2007

Bearwear Inc. Makes the wave solder weight bags you are searching for. Lewisville Texas 972-315-6457 http://www.webspawner.com/users/bearwear/

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#51908

wave solder bean bags | 27 September, 2007

I love how a 2 year old thread stays alive! LOL

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#51972

wave solder bean bags | 4 October, 2007

I would agree with the cotton bags and can be bought basically any where. I myself preferred to use rice as it had the weight, but not too much. An added addition was it does not contaminate anything as well and is inexpensive to buy.

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#51992

wave solder bean bags | 8 October, 2007

Excuse me, I wonder how this bag working.

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