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

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


Ken Mok

#13073

stencil condition | 7 January, 1999

What kind of equipment are you using to gauge the thickness of your stencil after it's used for some months? How to determin the condition of the stencil? Your input is much appreciated.

Ken Mok, based in Shenzhen, China.

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Earl Moon

#13074

Re: stencil condition | 7 January, 1999

| What kind of equipment are you using to gauge the thickness of your stencil after it's used for some months? How to determin the condition of the stencil? Your input is much appreciated. | | Ken Mok, based in Shenzhen, China. | | | Overarm micrometer upon receipt and after use.

Earl Moon

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MMurphy

#13075

Re: stencil condition | 7 January, 1999

| | What kind of equipment are you using to gauge the thickness of your stencil after it's used for some months? How to determin the condition of the stencil? Your input is much appreciated. | | | | Ken Mok, based in Shenzhen, China. | | | | | | | Overarm micrometer upon receipt and after use. | | Earl Moon

Ken, consistent height and volume of the material being deposited is a good indicator of stencil wear. If your stencil manufactuerer is using a properly hardened steel foil (300 series) you will probably tear or otherwise damage the stencil before z axis wear becomes an issue. |

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Jason Hall

#13076

Re: stencil condition | 9 January, 1999

| What kind of equipment are you using to gauge the thickness of your stencil after it's used for some months? How to determin the condition of the stencil? Your input is much appreciated. | | Ken Mok, based in Shenzhen, China. | | Ken, I have never seen a stencil live long enough to see a measuring device up close. I think if you are wanting to measure a stencil to see if there is a problem you might want to check process first. Then again Who am I!! |

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thebear

#13077

Re: stencil condition | 17 January, 1999

| What kind of equipment are you using to gauge the thickness of your stencil after it's used for some months? How to determin the condition of the stencil? Your input is much appreciated. | | Ken Mok, based in Shenzhen, China. | | | you ensure that you dont over stretch it when setting up then you won't need too

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