Best safe tool to push film down to remove air bubbles on back side?

We have been trying to use finger pressure on a small flexible circuit to mount or stick (the adhesive backside) of flexible circuit film to a rounded surface, but have found tiny air pocket/bubbles in the adhesive that have cause failure of adhesive to hold. Wondering if there is a better blade tool that is safe for flexible circuits, that has rounded edges (not sharp edges), but can apply pressure to circuit film to smooth out and remove air bubbles, other than using a non-conductive flat blade, such as non-conductive screw driver tip. A non-conductive spudger looks like the only alternative in Ifixit, but the flat tip looks sharp. Tip blade should be small, less than 1/2 inch. -Tom

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Hi @tomr77

Have you thought about using an old plastic credit card? Most have rounded corners and the edges aren't sharp. (Can't have the customers cutting themselves can we?)

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Thanks, but a credit card size is too big. Area to smooth out, of the flex circuit film, is close to 1/2 inch square. A blade tip around 1/4 inch width is preferable. Yes, this is a very small flex circuit film.


Hi Tom.

Just thought you could cut it to a strip size to suit and use the original edge to smooth it out.


Yes, that could help one to get by for a one or two use, but if this is a repetitive process, a 6 in "tool", such as spudger or non-conductive screw driver, is easier to hold and use. Also, without finding such a tool to purchase, we will likely try to round off the edges of the non-conductive screw driver we have now. Was just hoping ifixit would offer such a tool. Thanks for the suggestion.


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Tom Richards will be eternally grateful.
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