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LED 3rd brakelight upgrade
#61

yeah yeah - that's it
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94 Midnight Metallic Blue Cab Porsche 968 w/deviating cashmere/black interior and WAY too many mods to list - thanks to eric for creating www.968forums.com



"It isn't nearly as expensive to do it right as it is to do it wrong."
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#62

[quote name='Anchorman' post='45331' date='Jan 6 2008, 05:30 PM']..or there's

[Image: attachment.php?thumbnail=4309][/quote]



I wonder why ASC didn't do it that way? They could have put the 968 badge off to one side.

Looks very clean.
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#63

it would have required a change in the bumper cover
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94 Midnight Metallic Blue Cab Porsche 968 w/deviating cashmere/black interior and WAY too many mods to list - thanks to eric for creating www.968forums.com



"It isn't nearly as expensive to do it right as it is to do it wrong."
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#64

Why a change in the bumper cover? That 3rd light is in the panel just above the bumper cover.



Why not stick a flexible LED strip to the rear cab window? And/or stick a strip to your roll bar if you have one?
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#65

i was actually referring to putting it into the bumper cover, like on the vette, which would have required a hole in which to mount it - to add it into the skinny panel on top would have been pretty straight forward, though there is very limited room behind there for a flush fixture, which jim found out when he did this



as for the top or roll bar mounting, it would not be legal in any state
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94 Midnight Metallic Blue Cab Porsche 968 w/deviating cashmere/black interior and WAY too many mods to list - thanks to eric for creating www.968forums.com



"It isn't nearly as expensive to do it right as it is to do it wrong."
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#66

Made the mold from SILICON RTV and let it set-up. (1/9/08)

Poured clear resin into the mold and removed it after it set-up.(1/10/08)

I need to get some PVA mold release. This product blocks the air from coming into contact with outside layer of the resin casting. Resin will only cure to a tackles finish in the absence of air. After the full cure the PVA can be washed off of the casting.



I'll mount the clear lens on my cab as soon as it is fully cured and post some pics taken in the off and on state, day and night.



Material Used:    





Lens removed from silicon mold:    





Clear lens with OEM red lens:    





Brian
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#67

pva is a great product... best to be applied with an air gun





if ever using it with something besides silicon(such as a fiberglass project) be sure to still apply a liberal amount of mold release wax. It's easy to think the pva will do the job alone and ruin an attempt... I have
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#68

[quote name='saxman' post='45596' date='Jan 12 2008, 12:43 AM']pva is a great product... best to be applied with an air gun

if ever using it with something besides silicon(such as a fiberglass project) be sure to still apply a liberal amount of mold release wax. It's easy to think the pva will do the job alone and ruin an attempt... I have[/quote]



Saxman,



Found some in the garage from my son's Camaro project, so I applied last night. Used a pump spray attachment screwed into the container. Should be ready to wash off and install this weekend.



Brian
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#69

[quote name='SILVY968' post='45606' date='Jan 12 2008, 11:22 AM']Saxman,



Found some in the garage from my son's Camaro project, so I applied last night. Used a pump spray attachment screwed into the container. Should be ready to wash off and install this weekend.



Brian[/quote]

if you plan on using more, I'd suggest getting a small airbrush or something, just so you get a nice even coat.



It's really more important if you're applying it prior to making a part though.





The pva will come off easier in warm water, but it's definitely easy to remove.
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#70

[quote name='saxman' post='45609' date='Jan 12 2008, 01:29 PM']if you plan on using more, I'd suggest getting a small airbrush or something, just so you get a nice even coat.



It's really more important if you're applying it prior to making a part though.

The pva will come off easier in warm water, but it's definitely easy to remove.[/quote]



In this case, with a silicon mold, the PVA is only needed after the piece is removed from the mold to place an air-proof shell to allow for a tackless, full cure. The airbrush is a great suggestion, especially since the clean-up is water. Thanks
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#71

[quote name='SILVY968' post='45611' date='Jan 12 2008, 01:40 PM']In this case, with a silicon mold, the PVA is only needed after the piece is removed from the mold to place an air-proof shell to allow for a tackless, full cure. The airbrush is a great suggestion, especially since the clean-up is water. Thanks[/quote]

why not spray the mold with pva, then just let it cure in the mold?
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#72

That would assume that I new about PVA before I poured the resin.

Virgin here.

The last time that I used resin was when I was 18 on my surfboard.

I have only the knowledge, in this area, that I acquired from the videos at tapplastics.com.

Your knowledge is obviously greater than mine and I appreciate the info.

Brian
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#73

well with a mold there, you're not going to make just one are you?



think of the above mentioned comments as food for thought on the next go around





how did the piece turn out in terms of small bubbles in the plastic? Difficult to tell, but it looks pretty good in the image
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#74

[quote name='saxman' post='45625' date='Jan 13 2008, 12:50 AM']well with a mold there, you're not going to make just one are you?



think of the above mentioned comments as food for thought on the next go around

how did the piece turn out in terms of small bubbles in the plastic? Difficult to tell, but it looks pretty good in the image[/quote]



I could make more...



I do not know how you could spray the PVA into the mold. If you look at the lens portion, it goes straight down into the mold and is only about 1/8" thick. If I spray PVA into the slot it would puddle and distort the casting.



No bubbles in the plastic. I am pleased with the results. IMHO all silver and white cabs would look cleaner with a clear lens. Actually all but red cabs would probably take on a cleaner appearance.



I wonder if a light application of a wire wheel, to cloud up the inside of the lens would look better. Food for thought, if there is to be another run, I was just to excited to get the lens in and see how it looked.

Sun today in Seattle, so time to wash the car. Maybe it will take my mind off of the Seahawk's loss to the Packers.



Here are the final shots:



       
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#75

looks great... always nice to have projects like this work out like you think they will.





if you use an airbrush, and apply the pva lightly, you shouldn't have any issues with running. Doing it with a little spray bottle, you'll probably have less luck.
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#76

[quote name='saxman' post='45640' date='Jan 13 2008, 12:46 PM']looks great... always nice to have projects like this work out like you think they will.

if you use an airbrush, and apply the pva lightly, you shouldn't have any issues with running. Doing it with a little spray bottle, you'll probably have less luck.[/quote]



I was very pleased with the results. Thanks for the suggestions and the compliment. <img src="/forum/images/smilies/968/smile.gif" class="smilie" alt="" />



Brian
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#77

makes me tempted to do a dark version of the coupe 3rd brake light that blends in with the wing more...





other projects first though
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#78

Oh, go ahead and do it.

If you don't care for the OEM version, change it!

Brian
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#79

[quote name='SILVY968' post='45659' date='Jan 13 2008, 07:21 PM']Oh, go ahead and do it.

If you don't care for the OEM version, change it!

Brian[/quote]

I really need to prioritize my projects for the car... I really have to force myself to finish one project before starting another or nothing ever gets done
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#80

Good thinking, Saxman - and we "know" which is supposed to be priority, don't we?



Great job, Silvy - this has been interesting to follow. The clear lens looks great on your car.
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