DIY projector screen paint finally found for the uk! - black widow - Part 2

Discussion in 'Projectors, Screens & Video Processors' started by HDPete, Oct 14, 2012.

  1. HDPete

    HDPete
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    Last edited by a moderator: Oct 15, 2012
  2. HDPete

    HDPete
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    AAA has arrived, off to get the Johnstones tomorrow.

    I have a JVC HD100 (600 lumens) and the cinema room has been painted deep purple on the Walls.

    Should I have a White base coat under the BW screen? The purple wall is a perfect finish at the moment so don't really want to add to it unless i have to.

    The room will be nice and dark as there's a single north facing window and there will be black out blinds. Any idea whether a 3:1 or 4:1 mix would be best with a JVC HD100?

    Regards
    Pete
     
  3. binkobonko

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    As a painter and decorator I don't normally basecoat in white, theory being that it's just one more colour to cover up and you might as well be getting a coat of your final colour on instead.

    Here, however, where you're not under time pressure to earn money, and where you're working from a deep purple, a coat of white to kill some of that darkness would be what I'd do.

    Don't worry too much about your surface. The mixed paint, if you go 4:1, isn't too thick. I used Dulux. There will be no problem with another brand, but if it does seem a bit thick, don't be afraid to add a splash of water to loosen it.

    The pile of your roller will have more effect on your finish. For some reason, I used a radiator roller with a short pile. Although this took longer, I did get a lovely smooth finish.

    Good luck!
     
  4. mech

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  5. JamesBaby

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    Folks, I ordered the Aluminimum paint, but the Medium version arrived instead of the Fine base. I urgently need to know if this will be a problem?

    Please can someone advise.

    (I have 2.5l of the main paint in flat matt, and 480ml of the Alu Medium.)
     
  6. mech

    mech
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    Yes it will be a problem. The medium was too large in my testing. You could try it if you like though. But be prepared to paint over it. :smashin:
     
  7. JamesBaby

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    Thanks Mech. I appreciate your advice.

    Ill send it back as it will save me money.

    Thanks :)
     
  8. LightBright

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    It's a shame the old thread was closed.

    I've just been adding up the cost of the bits to make a screen (roughly 2.4m x 1.4m in size). It comes in at well over £100. Surely I can buy a decent/comparable grey screen for this much? No?
     
  9. binkobonko

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    Why can't you just paint the wall?
     
  10. LightBright

    LightBright
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    Me? Chimney breast
     
  11. JamesBaby

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    I've just finished making a 3m x 1.27m 1:2.35 screen frame from hardwood. Covered it in Devore velvet which is not cheap either. Painted the black widow 3 coats too. Now drying.

    However, I now have the following left over:

    0.5m x 4m length of Devore Velvet
    At least 1.5 litre of Black Widow dulux flat Matt
    At least 1 litre of Black Widow Leyland vinyl Matt. I have this from a previous job I did but forgot I still had it, so made more before realising.

    I may put it up for sale to recoup some costs and save other people sone money too. :)
     
  12. LightBright

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    I'm interested in that. The paint at least. I was gonna paint Foamex
     
  13. signs

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    Why paint the Foamex ?
     
  14. LightBright

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    Cos otherwise it's the wrong colour. And also everyone says I need this magic paint.
     
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    I take it you are using white foamex ? The only reason I would consider painting is if your room is a light colour :confused:
     
  16. binkobonko

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    Me too. I skimmed mine over with Easifill, sanded then painted the whole thing. Works a treat. Grey goes with a lot of colours, I don't have a fixed screen dominating the room and can move the picture around the wall if need be. YMMV.
     
  17. LightBright

    LightBright
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    Seriously? You described the scenario then dismissed it and became confused?
     
  18. signs

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    Stuff you then , i was just trying to help , paint away !
     
  19. LightBright

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    Thanks, I will :p
     
  20. JamesBaby

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    Is it just me, or does this paint 'settle' and look better after a few days after painting? Initially my whites looked almost blue, but now they seem much better?
     
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    If anybody else is considering painting Foamex, palight, etc etc please PM me for advice .

    I work with this stuff day in day out and have done for over 30 years (the clue is in my user name ;) :))
     
    Last edited: Nov 8, 2012
  22. VJocys

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    I made photo of “Black Widow EU (UK)” and “Celexon” white projector screen side by side...
    • 4 parts (960ml) of “Johnstone's Covaplus Vinyl Matt Finish” tinted (NCS color code: S 0907 Y70R) paint from Johnstone's or Leyland Trade.
    • 1 part (240ml) of “Auto-Air Aluminium Base Fine” (code: 4101) paint from Createx Auto Air Colors.

    Results of grayscale range:

    [​IMG]
    Orignal: 0-255 (range: 255)
    Celexon: 11-193 (range: 182)
    BW-EU: 7-168 (range: 161)

    I think, “Celexon” has better range partly, because of higher gain (glossiness). Black Widow EU (UK) is more matte and therefore spread light to sides more:

    (white corner-center: 180-205) (difference: 25) Celexon
    (white corner-center: 163-173) (difference: 10) BW-EU

    I would recommend to change mix slightly and increase glossiness (gain) and brightness of “Black Widow EU (UK)”, by adding to mix some part of glossier white color.

    I will try to do another comparison after 1 month and will check, if paint will change its characteristics (as surface should slightly flatten and become glossier).
     
    Last edited: Nov 19, 2012
  23. DoverLodge

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    Hi, I am a complete nooby to this and I am halfway through my own DIY cinema build http://www.avforums.com/forums/home-cinema-building-diy/1689909-loft-conversion-home-cinema-2012-a.html. I have read and read many forums on DIY screens and this paint seems to be the best answer. I also read that using canvas for the screen is also a good idea. I am sitting 4m back from the screen so I guess I wont see fine pattern on the canvas itself?

    My questions are would a 586 Universal Primed Extra Fine Finest Italian Cotton 253gsm canvas be OK for the screen? my room will be painted dark so light should not be too much of an issue. I have a Panasonic PTAT5000e projector with 2000 Lumen. How many coats of paint will I need and will I have to use a base coat and if so what colour? I am going to put an outer frame around the screen but will figure that out later. Is stapling the best way to get a taught canvas?

    Any help would be greatly appreciated
     
  24. binkobonko

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    image-1969002168.jpg



    image-2863790215.jpg

    My black widow wall and picture of Olympics. Bit blurry photo, doesn't really do it justice, but much simpler than making a canvas.
     
  25. binkobonko

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    image-1239535077.jpg

    Better one of Serenity on BD. 720p too.
     
  26. DoverLodge

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    Thanks binkobonko I like the look of the wall being painted and the picture quality looks good.
     
  27. flaviorodrigues

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    Hi,

    My name is Flávio Rodrigues, im from Portugal and like to creat a diy paint screen.

    I search on this forum and see that the best diy paint screen is the Black widow.

    I like to know how can i get online that sent to portugal this paint.
    This paint is mixed by the shop or i mix in home?

    Thanks
    Flavio Rodrigues
     
  28. Steve Stifler

    Steve Stifler
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    I'm painting an MDF board for my new screen and will paint using the BW 4:1 mix.

    Question is: the recommended roller has a 6mm nap. I was wondering if using a gloss roller ie, made of foam might be better and give an even smoother finish? Grateful for advice please from the experts.
     
  29. binkobonko

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    You should be fine with a 6mm, but by all means use a gloss roller if you want to. What will make more difference is the amount of paint you load onto the roller and how much you spread it out. Spread that bad boy out thin and apply lots of coats!
     
  30. Steve Stifler

    Steve Stifler
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    Thanks binkobonko
    I've posted a question on the JVC X30 thread asking if BW will work with xpand103/104 glasses, as the x30 polarises horizontally, which means some screens will give a darker image through the glasses. Don't understand this but some have dark images using Phillips glasses which are 103 clones.

    Anyone here have an opinion as I doubt those on the JVC thread use BW?
     

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