Mix and Tin vs. Tint and Mix - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 12 Old 04-11-2019, 10:35 PM - Thread Starter
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Mix and Tin vs. Tint and Mix

I have a quick question if you can help:
Could I make the paint mix for a screen projector wall and then make it tinted by HD or Benjamin Moore - so the Mix has the right grey level I Want (considering the San Antonio Gray AC-29 from Benjamin Moore) ?
OR
Should I get the paint tinted first (as I understood everybody is doing) ? and then Mix with the Rustoleum and Poly.

Thanks

Vince
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post #2 of 12 Old 04-12-2019, 06:09 AM
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Quote:
Originally Posted by Vincent Durieux View Post
I have a quick question if you can help:
Could I make the paint mix for a screen projector wall and then make it tinted by HD or Benjamin Moore - so the Mix has the right grey level I Want (considering the San Antonio Gray AC-29 from Benjamin Moore) ?
OR
Should I get the paint tinted first (as I understood everybody is doing) ? and then Mix with the Rustoleum and Poly.

Thanks

Vince

Usually one has to get the Paint tinted first.....because the Paint suppliers don't like "Tinting & Shaking" containers brought in from outside.


The SA-Grey is a fairly Neutral Grey, so you should be OK...however results may vary dependent upon how accrately the Tint is mixed. Of course that applies to any Outlet's Computer-Generated Tint formulas. A close match is Universal Grey...a "universal" tint that all Paint locations have on their charts. The other consideration is the Base Paint itself...which needed to be a Neutral white with as much Gain (T-Oxide) as possible without pushing Blue and without depending upon having a Sheen to provide reflective-ness. I recommend PPG Diamond Pure White (...the color, not the "Base"...)

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post #3 of 12 Old 04-12-2019, 05:08 PM - Thread Starter
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Thanks MM.
Should I expect the Rustoleum white pearl to lighten the color I will pick (thinking about PGP Pebble Grey) ?
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post #4 of 12 Old 04-12-2019, 05:35 PM
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Originally Posted by Vincent Durieux View Post
Thanks MM.
Should I expect the Rustoleum white pearl to lighten the color I will pick (thinking about PGP Pebble Grey) ?

Yes.....it will, but sometimes people decide to add in an additional 10-12 oz of PPG Diamond White (after the Tint) so as to lighten further a bit as well as provide some additional Masking.

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post #5 of 12 Old 04-13-2019, 02:32 PM - Thread Starter
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Hi MM, Any concern going darker grey than Universal Grey ? My Paint guy is nice and OK to tint your mix and match whatever grey I want.Still thinking Pebble grey or San Antonio grey, both of which are darker than the Universal grey. So, that lead me to my question: why would people add 10-12 oz of PPG Diamond White to lighten further their screen. Seem darker grey is helping getting darker deep black.
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post #6 of 12 Old 04-13-2019, 03:18 PM
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Originally Posted by Vincent Durieux View Post
Hi MM, Any concern going darker grey than Universal Grey ? My Paint guy is nice and OK to tint your mix and match whatever grey I want.Still thinking Pebble grey or San Antonio grey, both of which are darker than the Universal grey. So, that lead me to my question: why would people add 10-12 oz of PPG Diamond White to lighten further their screen. Seem darker grey is helping getting darker deep black.

Here it is....


The darker you go in Grey, the more predominant some Reflective Particles can appear set in such darkness. So instead they get a little further masking by virtue of the ratio of Tinted paint to Metallic content is higher, therefor the Reflective Mica is slightly more repressed. Everything about "darkness" is relative to knowing how dark must it be...or not. Deeper Blacks that come at the cost of Greyed whites and dulled Colors are counterproductive. In the same vien, excessive metallic content and/or Polyurethance can result in "Dirty Screens" and Sheen-y surfaces. Gain isn't good unless it's "gained" without sacrifice.



Nailing down a great compromise-balance between PJ/Room/Screen size/Screen surface is what constitutes a successful result that hits on every mark.


So....I'll do my homework and come back soon with a final recommendation.

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post #7 of 12 Old 04-13-2019, 03:25 PM - Thread Starter
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Thanks MM - FYI, my setup: Benq HT2150ST / 110" screen / perfectly smooth wall / keep usually a small light on in the room (some ambient light)
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post #8 of 12 Old 04-13-2019, 03:49 PM
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Originally Posted by Vincent Durieux View Post
Thanks MM - FYI, my setup: Benq HT2150ST / 110" screen / perfectly smooth wall / keep usually a small light on in the room (some ambient light)

Mounted correctly, with the Top of the Screen 1" under the Center of the Lens (inverted), and at 6' Throw, the aforementioned paint formula variations could all work.


We need t0 focus.


2 Quarts from 1 Gallon PPG Diamond tinted to the darkest choice you want
1 Quarts Rustoleum Pearl
16 Ounces RustOleum Ultimate Polyurethane (Matte)


Mix together in this sequence in a clean container:


Poly
12 oz Water
PPG
Pearl



Strain 3.75 Qt. Mix into a Clean 1 Gallon Container


That is a "Ready to carefully Roll" mix, and with further thinning with water to accommodate Spraying, the amount dependent upon the Sprayer's properties.

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post #9 of 12 Old 04-14-2019, 06:20 PM - Thread Starter
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Thanks MM
Should I prime+Paint Flat white first before applying the mix ? Or white primed (only) is OK ?
I will spay the mix: Can I roll the primer, or primer should be sprayed too ?
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post #10 of 12 Old 04-15-2019, 06:53 AM
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Originally Posted by Vincent Durieux View Post
Thanks MM
Should I prime+Paint Flat white first before applying the mix ? Or white primed (only) is OK ?
I will spay the mix: Can I roll the primer, or primer should be sprayed too ?



A good job of Priming (even and opaque)is fine


If you can spray the primer, you should because besides the smoother application with no risks of Roller Marks or ridges, it give you practice for the Screen paint to come....getting use to the Gun, the Duster Spraying technique, and how thin paint the paint needs to be to exit the Gun and produce the desired 10" to 12" tall Vertical Pattern

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post #11 of 12 Old 06-08-2019, 11:41 AM - Thread Starter
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Quote:
Originally Posted by MississippiMan View Post
A good job of Priming (even and opaque)is fine


If you can spray the primer, you should because besides the smoother application with no risks of Roller Marks or ridges, it give you practice for the Screen paint to come....getting use to the Gun, the Duster Spraying technique, and how thin paint the paint needs to be to exit the Gun and produce the desired 10" to 12" tall Vertical Pattern
Wanted to give some comments about what I ended up doing...and the result.

What I did:

I mixed:
1 gallon Benjamin Moore Matte
2 Quarts Rustoleum Pearl
1 Quart RustOleum Ultimate Polyurethane (Matte)
Then got this mix custom tinted / matched to Pebble Grey by Benjamin Moore

I primed my wall - with a roller - 2 coats.

Then spay 2 coats with the mix pebble gray and painted the whole wall.

Result is GREAT, actually better than my outdoor Elite screen. Better black. Better contrast. Less reflection on my white walls / ceilings.

Thank you all guys for your help, especially MM.

Now I need to upgrade the projector :-)
Vincent
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post #12 of 12 Old 06-10-2019, 09:54 AM
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Great news....and congratulations on completing a successful project!


However..................we all desperately need to see more Screen Shots. Colorful Screen Shots.



If you have issues taking good ones...just move back, and then zoom in to fill 2/3rd of the image field with the Screen.


Hold that Camera steady...or better still, set the Timer for 2 seconds to allow you to settle in, and not have the pushing of a Shutter button ruin the focus.

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