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Old 02-08-2014, 08:39 AM
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How to shape this headliner

Is this headliner made from komotex/sintra backing? If so, how is the corner shape formed?
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Old 02-08-2014, 09:01 AM
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If this is a truck, it's possible they padded an ABS or cardboard headliner board, which are readily available for older pickups. It's also possible they made a custom headliner board out of fiberglass by using the top of the vehicle for a mold, and then cutting down the result to fit inside the vehicle. It's also possible to form the Sintra by heating it, and making corners by cutting them and gluing them back together, but that's a lot of work and could waste a lot of material. Otherwise, the headliner itself is flat. Look at this thread, it will give you the idea of how to do it without having a headliner board. The fabric is glued to the headliner board (which could be waterproof panel board, or PVC foamboard (Sintra)) the headliner board is glued to a 1/4" luan plywood base, and then the material around the edge is pulled down tightly to eliminate any wrinkles. It is also done by stitching around the perimeter about 2 or 3 inches in from the edge, being glued to the plywood base, and then being pulled down. Check out this thread: Custom Headliner for '36 Ford Pickup.
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Last edited by DanTwoLakes; 02-08-2014 at 09:17 AM.
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Old 02-08-2014, 09:37 AM
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Dan, this is a photo of a '32 Ford five window coupe interior I took knowing that I would someday have mine upholstered. I am welding in the three point seat belt harness upper attachment point in this part of the car and must weld in the curved lower piece to replace the original package tray. I have been looking at the upper curved area to figure if there is anything I can do to help with the headliner upholstery. I previously read the post you mentioned and that is why I made this post. Just trying to think ahead on how to help the upholsterer form and attach the headliner.
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Old 02-08-2014, 09:58 AM
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Here are two photos of the interior of my car. The one shows the original Henry metal stamping and tack nail material insert at the top for the original side trim panel. It screws to the wood at both ends. The second is the lower curved section that was part of the original Ford package tray. All of the original upholstery was missing. I don't know how Henry had the upholstery panels made for this area. I doubt that it had that complex curve between headliner and side panel in it though.
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Old 02-08-2014, 12:22 PM
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These pictures are of a 31 Model "A" Tudor. The original headliners in those cars were hung from the wooden braces in the roof that went from side to side. The perimeter was pulled down and stapled to the wood above the doors and windows, and then panels were butted up to the headliner and were nailed in with finishing nails. Look at these pictures, they are not of a coupe, but it's the same principle. The panels that butt up to the headliner were made in 5 pieces from the back of the driver door to the back of the passenger door. The corner panels in the rear go from the edge of the rear window to the rear of each side window. there is then a narrow panel that goes above the rear window and above each of the side windows. All of the model "A"s were slightly different, so there had to be room for adjustment, hence all the panels. The lower panels were in three pieces. One panel to the edge of the rear window to the rear edge of the door, and one panel under the rear window. Again, these were made that way to be more adjustable, you could eliminate some of the seams with some careful fitting. If you have removed any or all of the wood in the car's interior, or you don't want nail holes in your panels, you will have to provide something to attach the panels to, preferably metal that can have holes drilled in it. You can buy the unfinished trim panels in a set for your car from LeBarron Bonney for $250. https://www.lebaronbonney.com/cart/pups.php
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Old 02-08-2014, 07:49 PM
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Thanks for the photos and explanation. I have retained all of the original wood. I would like to eventually make my own panels. I'll get the seat belt anchors and package tray changes done. I'm sure that I will have more questions soon. Thanks again.
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Old 02-11-2014, 02:21 PM
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Quote:
Originally Posted by hotrod4dad View Post
Is this headliner made from komotex/sintra backing? If so, how is the corner shape formed?
Here's how I've attacked this problem:

Lowes sells ceiling grid light panels. It's incredibly flexible. Secure it in place and coat it with clear packing tape.

Apply fiberglass, 2 layers of 1.5 oz is enough. Remove the part from the form.

I formed a new trans tunnel the same way.
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Old 02-11-2014, 03:45 PM
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The original question was about a headliner. For what you did, with vertical panels or a trans tunnel, the Sintra is even easier to bend, and far less brittle. If you heat Sintra, it will stay in that shape. You can make a complete circle and form Sintra into a tube if you want. You would not even need fiberglass at all, spend 1/3 the money of fiberglass, and spend 1/10th the time on it.
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Old 02-11-2014, 04:45 PM
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Thanks guys. Good info.
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Old 02-11-2014, 05:39 PM
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Quote:
Originally Posted by DanTwoLakes View Post
The original question was about a headliner. For what you did, with vertical panels or a trans tunnel, the Sintra is even easier to bend, and far less brittle. If you heat Sintra, it will stay in that shape. You can make a complete circle and form Sintra into a tube if you want. You would not even need fiberglass at all, spend 1/3 the money of fiberglass, and spend 1/10th the time on it.
You're 100% correct, but I choose to learn as I go. Becoming competent with less-than-easy materials is a personal goal, OK?
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Old 02-12-2014, 08:17 AM
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Absolutely O.K. By all means don't consider anything else. I didn't say what you posted was wrong. If you had read the entire thread, you would know that I told the original poster that it was possible they used the top of the vehicle as a mold, cut the result down to fit inside the vehicle, and made a headliner out of fiberglass. There are other people who read these threads besides you, and I explained every way I could think of that could result in the headliner in question.
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Last edited by DanTwoLakes; 02-12-2014 at 08:32 AM.
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