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Quote:
Originally Posted by Discseven View Post
Jim... bagging is an interesting idea that was tried. The problem is, a vacuum draws the vinyl TOO TIGHT to the dash's surface. This ultimately transmits any imperfections to the vinyl's surface. (If dash, application of adhesive, and vinyl are perfect... bagging has potential.)

The idea with gel is to "float" the vinyl by applying only very light pressure to the vinyl's surface once an area is glued. Technically the goal is for the woven backing to connect with the gel... not the vinyl. This "float" of the vinyl allows some tolerance for imperfections.
This had me thinking of getting my vacuum bag setup out also. Maybe try the same method used by some of the carbon guys. Pull the dash cover off and put a plastic liner back over the dash area of the car. Spray or squeegee the dash with 60 minute epoxy (go to your RC hobby store, big bottle of epoxy there in different flavors), lay in the vinyl, place the cover plastic over it, apply the vacuum, then work out the wrinkles and such till the epoxy cures.

BTW, scuffing the old surface with 80 grit would also help the epoxy bond.
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Old 08-13-2015, 08:40 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #61 (permalink)
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Right-on with the scuffing John. That was done in this case. The surface was then cleaned with alcohol.

If you---or anyone---does a bag technique that works... pls do post the results.
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Prior: '77 Copper 924. '73 Black 914. '74 White Carrera. '79 Silver 930. '79 Black 930. '79 Anthracite 930.
Old 08-14-2015, 05:49 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #62 (permalink)
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Been three years since doing this dash. Status = no issues have occurred with vinyl material or gel adhesive. There's also no warping of dash. Were I to do again, would take same path with one exception... center AC vent. Would take 3/32" off bottom and one side inside porthole in dash for this vent. This would allow vent unit to insert fully and claw-grab into dash as it is designed to (so screw mod would be avoided.) Tested leather using same procedure. Vinyl is easier material to apply due to backing---vinyl's cloth woven backing is perfect whereas leather's backing is not. Am sure leather could be applied with same result as vinyl but "practice" is needed. While not 100% sure, I believe leather tends to shrink and expand more than automotive vinyl depending on cabin heat/cold.
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Current: '80 Silver Targa w /'85 3.2
Prior: '77 Copper 924. '73 Black 914. '74 White Carrera. '79 Silver 930. '79 Black 930. '79 Anthracite 930.
Old 10-20-2018, 02:56 PM
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Great write-up Karl, mad skills....
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Old 10-21-2018, 06:59 AM
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Originally Posted by 4flyboy View Post
Great write-up Karl, mad skills....
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Current: '80 Silver Targa w /'85 3.2
Prior: '77 Copper 924. '73 Black 914. '74 White Carrera. '79 Silver 930. '79 Black 930. '79 Anthracite 930.
Old 10-21-2018, 07:54 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #65 (permalink)
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