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Screen Build for Benq W1070 using Silverfire - Page 3

post #61 of 99
Thread Starter 
I will have to think of a movie that has that to test. Any recommendations?

If all is good then I will start the trim. I am sure I will have a couple questions on that.
post #62 of 99
Top Gun
post #63 of 99
Thread Starter 
Well i dont have Top Gun but i did have a few other movies that have sky scenes(planet earth worked great). I also connected my laptop to the pj and you can really see the texture when there is a white only picture. it is really apparent on the right side of the screen just below the center. frown.gif well guess its option 1 time. off to sanding and a couple dusters i go.
post #64 of 99
OK...but also remember that the instances where you'll be viewing such mono-istic shaded content like a all white screen are pretty far and few between normal viewing times.

Do the "upgrade" then forget everything else and start enjoying your set-up, confident in knowing that compared to other screens that have even more texture, you doin' just fine. cool.gif

.......and go watch the Underworld series..... biggrin.gif
post #65 of 99
Thread Starter 
Well I did the sanding and of course Murphy had to go showing his face....never fails mad.gif. During the very first few strokes, apparently there was a tiny bit of water still in the sponge and it "wet" sanding two lines. naturally it was too late by the time I saw it. I tried sanding that spot just a bit more but don't want to take off too much paint. How would you recommend I rectify this or will these go away with the dusters? Should I do a vertical quick duster sweep on this line like I did where the Sintra was showing after the aggressive wet sanding?

post #66 of 99
Quote:
Originally Posted by pb_maxxx View Post

narhic_fd

now that you've been schooled on the 3900... and have a 1.5mm tip in hand...
shoot for texture something like this...



macro of a SF 6 screen sample... the white above is a sheet of paper.

the beauty of dusters is the you eliminate the possibly of hotspotting out of the equation and place focus of uniformity back on the projector.

since your comparing that to your thumb or finger then those are deff VERY SMALL texture. I'll shot for that when i do some S-I-L-V-E-R test spraying today. Thanks PB_MAXX
post #67 of 99
Those shots look good. Even though I'm not doing Silver FIre it makes me want to go get my S-I-L-V-E-R done..NOW!!
post #68 of 99
Quote:
Originally Posted by tza88 View Post

Well I did the sanding and of course Murphy had to go showing his face....never fails mad.gif. During the very first few strokes, apparently there was a tiny bit of water still in the sponge and it "wet" sanding two lines. naturally it was too late by the time I saw it. I tried sanding that spot just a bit more but don't want to take off too much paint. How would you recommend I rectify this or will these go away with the dusters? Should I do a vertical quick duster sweep on this line like I did where the Sintra was showing after the aggressive wet sanding?

Do one series of short blending horizontal sweeps, top to bottom, quickly. From 14". Just try to put some additional paint on the area with a focus at center.Do it once....let dry. Inspect and repeat at most once more, then let the Dusters do the rest.

Never mix paint H & V paint rows



Sometimes I think Murphy is an In-Law.
post #69 of 99
tza88...

how did you get those vertical's in there. you had to have been rubbing pretty hard back and forth with a vertical motion.

when you sweep sand... you taking rather broad but very light strokes...usually working in a clockwise and then counter-clockwise motion.
a single stroke would be about 15-20" long from 12 o'clock with a 1/4 circle turn to 3 o'clock. and then reverse that with 3 o'clock to 12 o'clock sweep....
working from left side to right side of the screen.

anyways... now you gonna have to do smaller feather sweeps about 8-10" inches..
working from about 10 o'clock to 2 o'clock...
to make sure you don't have a vertical ridge that you can feel.

then you want to feather in some dusters on the sanded area.

then do at least 2 dusters on the whole screen.

---

oops the MM beat me to it...
post #70 of 99
ouch. maybe those sweeps and 1 duster... and if you keep your fingers crossed...
post #71 of 99
Quote:
Originally Posted by pb_maxxx View Post

tza88...

how did you get those vertical's in there. you had to have been rubbing pretty hard back and forth with a vertical motion.

---

oops the MM beat me to it...

For once!

tza88 stated his Sponge had some water in it.

I'm going to accept that he was using light strokes, light enough that it was the water dripping out that messed his paint up.

This time.......

Don't sand anymore. Just do the series of "Feather Sweeps I described, then the final Dusters. The Sweeps are done quickly...and the Dusters as fast or slightly faster than you've done before. Just do them at a steady speed, and with as precise an overlap as you can muster.
post #72 of 99
Thread Starter 
pb....i guess i misunderstood MM's sanding post from earlier. hell i even had someone a ton handier than I take a look to make sure i had the right thought. I could have swore he meant sand in a vertical motion moving half the length of the sponge across the screen, doing the top half and then the opposite for the bottom half, overlapping the center line. While it doesnt really matter at this point, i would like to totally understand the correct process(maybe for future use). I did diagram A with the arrows representing the direction of the sanding sponge. I had originally thought MM meant what diagram B shows. Based on your description, is diagram C correct, moving left to right then right to left(ignore scale)? I am a visual learner which is part of my problem understanding some of the detailed processes that you guys provide.

MM...Ok will do and yes you are right. I did very light strokes and very little came off but the first stroke when i put pressure on the sponge, a little water came out and as i ran the sponge down it used that water as the lubricant to wet sand that line. I assume 16oz of paint will be enough for these sweeps and the 2 dusters, correct? Should i do the feather sweeps like PB described, moving the gun 10 to 2? or stick with mulitple horizontal sweeps down the blemish?

Oh and Murphy is always alive and well with any project i do. I also joke with the wife that if it wasnt for bad luck, i wouldnt have any! lol




Edited by tza88 - 4/28/13 at 4:43pm
post #73 of 99
taz,

the 10-2 smaller feather sweeps i described was for feather sanding the affected area... not for painting.
post #74 of 99
Thread Starter 
Ah ok. Gotcha.

Will do the feather sweeps and dusters in a few once the kids are in bed
post #75 of 99
Thread Starter 
I did the feather sweeps on the vertical line, took 3 to mostly make it dissappear. I then did 2 dusters across the entire screen. Overall it looks good to the eye. When you really get up close you can see some individual spots/texture but you really have to get close. I did some testing with various movies and I did notice a few things which i tried to capture in pictures. If you play a scene that has blue sky/clouds, on the middle to upper right side of the screen you can see texture and if you move your head just right you can see what appears to be where i sanded and it didnt get covered with paint. Its very difficult to capture this in a picture but i tried in the first 3 below, the thrid being the closeup. I honestly dont know if anything can be done about this. I dont have much paint left(a little less than 10oz i think). Again this can only be seen with certain scenes so it may end up being something i just have to deal with or ignore. I could try and do a couple more dusters. I still have all the tarps up...or the kill room as my wife calls it(dexter reference).

Thoughts?

where texture is seen
texture and sanding strip seen
Closeup of texture
Shot from Cars
Avatar
post #76 of 99
yep i see it... that's where you feather swept.

actually i'm surprised you still have 10oz left..
nothing that another duster can't take care of or to minimize it to a point that you'll have no regrets.
i'd do it in a heartbeat.

i gotta say... you are a real trooper...
they should call you 'mr patience'

most people would have given and blamed it on the SF.
post #77 of 99
Thread Starter 
Actually that's not where I did the feather sweeps. That was on the far right of the screen about 8in from the edge.

It is probably less than 10oz. Was just guessing. Most likely enough to do another duster or 2.

I refuse to blame SF since there are way to many factors that can cause issues. For some reason I have had a gut feeling that the mix was off because it doesn't seem to disperse like I would expect. I would swear that I could do 6 good dusters and you would still see individual droplets instead of a uniform paint layer. No way to prove it.

It really does look good other than this issue.
Edited by tza88 - 4/29/13 at 7:29pm
post #78 of 99
Thread Starter 
Should i do full screen dusters or try to somehow just do that general area? Not really sure thats possible without potentially causing a similar issue in another spot
post #79 of 99
Quote:
Originally Posted by tza88 View Post

Should i do full screen dusters or try to somehow just do that general area? Not really sure thats possible without potentially causing a similar issue in another spot

You seem to have the 'Feather Dustin' down pat. Concentrate on the aggrieved areas with your remaining paint, just being especially careful to feather out the edges.

Or do the entire screen with another Duster or two (if possible)......at this point it's a toss up.
post #80 of 99
Thread Starter 
i was a little more concerned with doing the feather dusting on this large of an area. Its pretty much 1ftx1ft right in the upper middle of the screen. Its pretty easy to feather dust smaller spots. Guess the center of the stroke will just need to be a longer movement instead of just rolling the wrist......HMMMM what to do

I think i have enough paint to do 2 full dusters of the screen.
post #81 of 99
Quote:
Originally Posted by tza88 View Post

i was a little more concerned with doing the feather dusting on this large of an area. Its pretty much 1ftx1ft right in the upper middle of the screen. Its pretty easy to feather dust smaller spots. Guess the center of the stroke will just need to be a longer movement instead of just rolling the wrist......HMMMM what to do

I think i have enough paint to do 2 full dusters of the screen.

Yes....increasing the center swath area is all it takes. I've done similar "repairs" many times.

Feathering is all about what you do at the beginning and end of each stroke. And like doing a Drywall joint, the wider the feathering, the less likely you are to see any transition point.

Now go finish that darn thing!
post #82 of 99
Thread Starter 
Finished painting earlier today and I have to say I am very happy with the final product......i better be cause i have no paint left. LOL. I ended up doing 2 long feather sweeps and another full duster. Looks great. I did have to add a little water to the paint cause it was quite thick and didnt flow through the nylon strainer. Didnt cause any issues. I tested it with all the same scenes and movies that showed the texture previous and its all but gone. In the very center of the screen under certain scenes you can see a slight bit of texture but its barely noticeable and honestly this is just me being overly critical at this point. I plan on taking it down tomorrow to start working on the trim and to add the shims to the bottom

I do have a follow up to a question i asked on the first page(posts 6 and 7). MM you stated to nail the trim either in the outer edge of the sintra or close to it and it will cause the trim to sit level. Wont this visually have a gap from the side? My question is one of a cosmetic nature. Since this is a basement and the "theater room" is not technically a room by itself, when you are walking to that area you will pass by the outer edge of the screen. I would naturally like both sides of the screen to look clean. I went ahead and painted the frame edge flat black prior to building it. Any recommendations on how to accomplish a clean look? I had thought about not stapling the outer edge of the velvet to the underside of the trim but stapling it to the underside of the frame, that way all you see is black velvet from the side. Not sure if this is possible or if there is enough velvet but was a thought. I am also going to have to move the upper and lower trim off the frame by 1/4in to accomplish the 103x58 which is fine cause based on the measurements as it sits, the trim would make it 57.5in tall


Finally done painting the screen!
Avengers looks AWESOME
post #83 of 99
Great work tza. The screen looks uniform with no hotspotting. smile.gif
post #84 of 99
Thread Starter 
Thanks rengep! It took a lot of patience and help to get it to this point. I am just ready for it to be done so i can start using the room. Should hopefully have the trim cut and ready to attach the velvet tonight.
post #85 of 99
Quote:
Originally Posted by tza88 View Post

Thanks rengep! It took a lot of patience and help to get it to this point. I am just ready for it to be done so i can start using the room. Should hopefully have the trim cut and ready to attach the velvet tonight.

From the photo, and seeing the Screw heads, the Trim needs to overlay the Sintra enough so that it can be nailed through Sintra & Wood together. I don't know what you had planned, but using 3.25" trim, and doing as suggested here: http://www.avsforum.com/t/1468028/screen-build-for-benq-w1070-using-silverfire#post_23204707 .....you should be ok. I also mentioned placing short pieces of scrap Sintra (...if you saved your cuttings...) over the exposed Poplar at spaced intervals to level out the difference. In any case, you should have at least 3/4" + Mdf Trim overhanging the Poplar. If not....then the painting of the poplar a "Satin Black Enamel" would do a great job. The only thing better would be adhesive backed Flocking. (...but if your gonna apply any of that stuff, do so "BEFORE" applying the Trim....)

No matter what, as is the case again.....unless you have exposed wood, and a nosy someone who isn't minding his manners....I don't think you have any cause for concern.
post #86 of 99
Thread Starter 
Since I had the Sintra delivered, I unfortunately didn't get the trimmings. I do however have some 1/4" poplar strips that will do the trick. I will space them out and paint them black since I already have the paint. Need to wait for the wife to get home to take the screen down. Don't want to damage the paint job!

I got the 3.25" Trim below
mdf trim
Edited by tza88 - 5/1/13 at 12:58pm
post #87 of 99
Quote:
Originally Posted by tza88 View Post

Since I had the Sintra delivered, I unfortunately didn't get the trimmings. I do however have some 1/4" poplar strips that will do the trick. I will space them out and paint them black since I already have the paint. Need to wait for the wife to get home to take the screen down. Don't want to damage the paint job!

I got the 3.25" Trim below
mdf trim

Use Clean Cotton Jersey Garden Gloves, or White socks on you hands.

Don't use 1/4" That's taller than the Sintra. You should use something closer to 1/8". You can get a "Ready Panel" 2' x 4' of Plywood Veneer at Home depot for not too much, strip it out in 2' lengths

Cut your Strips "the width of exposed Poplar"
Place one each on each side, at every corner, butting in from each direction. Glue these strips onto the Poplar. Now you should have a level transition between the outside edge of the Sintra, and the inside edge of the Plywood Strips.. A great "Nailer".

Unless by wonderful chance the "Cut IN" in the middle on the back of the trim will compensate for the extra height of the Plywood, and if the strips are cut just thin enough to fit but fill that space. It's not hard, even with a Hand skill saw. I know a "Finger-Safe" way.......... biggrin.gif

The last would be best of all. Requires a bit of measuring and precise placement, but perfection comes at a price. cool.gif
post #88 of 99
Thread Starter 
OK i am at a loss with this whole mitered corner trim. I have never done anything with a mitered corner before. I have done the math and made mock cardboard templates and i just cant seem to figure it out. Based on the recommendations on the first page, 103x58 is the target size which i cant seem to achieve. I am going to post my thoughts and maybe someone can tell me where i am going wrong.

Screen Frame = 110x64
Screen Size = 103x58

110-103 = 7, divided by 2 = 3.5in per side for inside cut to outer corner
64-58= 6, divided by 2 = 3in per side for inside cut to outer corner.

The above figures dont work out to get a mitered corner that sits correct. I cut the shorter trim to have the 58" inside edge. I then started to match it up with the longer trim using the back as a template(see pic). If i match the 103 to the 58, there is an extra 1/4" that extends past the outside edge of the side trim. The closest i could get was 103.5x58 since there is the extra 1/4". The only way i could see to get the 103x58 and still maintain coverage of the 110" frame behind would be to rip a 1/4" off the outer side of the trim, which for me would a very large pain since i dont have a table saw. Cutting 1/4" from a 110" long piece with a jigsaw will not be ideal or something I really want to do. Not to mention the upper and lower trim will be a diff width that the sides.

Please show me the error in my ways!

post #89 of 99
whoa.... you're making this much too complicated.

1) are the trim pieces you showed all the exact same width?
if not, then there's your problem.

2) and if they are the same width... then the only measurement you should be concerned with is
the either the inside measurement... so long as the outside edge extends past the outer edge of the sintra... the you're golden.

3) ok, so whatever your determined inside measurement is... it's from there that you make your 45% miter cuts.
(if you're boards are the exact same width and your miter cuts are exactly 45%... then they will always align perfectly.)
post #90 of 99
Thread Starter 
I tend to over complicate things. All of the trim is the exact same width - 3.25"

I had originally thought to just do 45 degree cuts and call it done but that would have equaled something like 37.5x103.5. I was trying to stay with the screen size recommended by MM in the beginning, 103x58, which i cant get to work out.
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