| View previous topic :: View next topic |
| Author |
Message |
halloweenfiend666
Joined: 19 Jun 2010
Posts: 15
Location: cleveland, oh
|
 Posted: Sat Jul 10, 2010 2:35 pm Post subject: Primer/humidity/color/time...??? |
 |
|
Hey guys
Well I got all my primer, paint, and clear. Now what I am wondering before I jump into spraying primer and eventually color is how long to wait between spraying and sanding primer? I've seen some "rule of 3" thrown around on the board... but unclear about it. Does it apply to the white primer? Just want to make sure I don't rush on spraying... Oh and also I understand that high humidity is not good for spraying on the clear (because of blushing) but what about doing the primer and/or the color coats? Will high humidity cause any other unwanted side-effects besides retarding the cure time? Thanks guys, -Jon. |
|
| Back to top |
|
 |
Structo
Joined: 21 Nov 2004
Posts: 26224
Location: Salem, OR
|
| Posted: Sun Jul 11, 2010 9:39 am Post subject: |
|
|
I let the primer dry overnight before sanding.
The "rules of three" pertain to the clear coats.
You can get blushing in the color coat if the humidity is high.
Usually about 55% is the lower limit to spray at although you can get blushing at lower humidities.
Did you also buy sanding sealer?
That is what should go on the raw wood first. 
_________________
Tom
ReRanch 101 Finishing Tutorial
.
Guitar Amp Repair |
|
| Back to top |
|
|
Vince
Joined: 10 May 2007
Posts: 10225
Location: Decatur IL
|
| Posted: Sun Jul 11, 2010 10:18 am Post subject: |
|
|
That's the upper limit.
_________________
US GUITAR SUPPLY |
|
| Back to top |
|
|
RayRay
Joined: 17 Feb 2008
Posts: 3081
Location: Arizona/Colorado
|
| Posted: Sun Jul 11, 2010 12:21 pm Post subject: |
|
|
| Vince wrote: | | That's the upper limit. |
Uuummmm, IMHO that's not necessarily true...  it depends on the temperature and circulation (Air movement) which could allow you to shoot at higher levels and still avoid blushing.
Blushing occurs when moisture in the air is trapped by the lacquer between the gun and the object being sprayed, and then deposited on the surface under the lacquer.
A warm spray area and a fan will reduce blushing.
55% may be generally accepted as ideal max, but if it was the limit, half of the people in the country couldn't finish.
I think hygrometers START @ 60% in Mississippi, Louisiana and east Texas 
_________________
Life without music is a VOID!
*"Zat you Margerrrret??" ( *Ray Stevens)
Some see the glass half full, others, see it half empty! I just want to know who the H*LL's been drinking MY beer! |
|
| Back to top |
|
|
Vince
Joined: 10 May 2007
Posts: 10225
Location: Decatur IL
|
| Posted: Sun Jul 11, 2010 12:28 pm Post subject: |
|
|
I just didn't want him thinking it was the lower limit and in fact Tom was trying to say upper limit. I wasn't trying to be a know it all...
No need to quote me on a point your trying to make.... but good info!
I have never had any blushing and I have sprayed outside in the middle of July on a sunny day. One thing I do and it's probably not too good to help stop blushing but I will be in the air conditioning prepping and then go outside to shoot it. Then I will bring it back inside to gas off in a spare back bedroom. Alway turns out great....
_________________
US GUITAR SUPPLY |
|
| Back to top |
|
|
halloweenfiend666
Joined: 19 Jun 2010
Posts: 15
Location: cleveland, oh
|
| Posted: Sun Jul 11, 2010 12:40 pm Post subject: rule of three's/spraying metallics |
|
|
Thanks guys.
Still unsure about the Rule of Three's? Can someone explain. Oh, and I'm spraying a metallic color and I understand that it's generally a good idea to spray the color with some light clear to lock the flakes in place, but how long should one wait to put that light coat on after all of the color? |
|
| Back to top |
|
|
RayRay
Joined: 17 Feb 2008
Posts: 3081
Location: Arizona/Colorado
|
| Posted: Sun Jul 11, 2010 12:44 pm Post subject: |
|
|
_________________
Life without music is a VOID!
*"Zat you Margerrrret??" ( *Ray Stevens)
Some see the glass half full, others, see it half empty! I just want to know who the H*LL's been drinking MY beer! |
|
| Back to top |
|
|
Vince
Joined: 10 May 2007
Posts: 10225
Location: Decatur IL
|
| Posted: Sun Jul 11, 2010 1:12 pm Post subject: |
|
|
The Rule of 3's is simply laying on a complete coats of clear 3 times a day.
You can lock the flake in after it sets up good. 3-4 hours...
_________________
US GUITAR SUPPLY |
|
| Back to top |
|
|
Rvator
Joined: 10 Oct 2008
Posts: 301
Location: Ijamsville, Maryland
|
| Posted: Sun Jul 11, 2010 5:52 pm Post subject: |
|
|
| I have been clear coating my tele project here in maryland and the Hum for the last couple weeks has been in the 70-80%.I absolutely could not lay down a pass on the wet side without blushing. It did gas out when I did it but I would not be able to do another pass until it cleared. The Hum dropped in the 40% range today and I was able to do some nice wet passes.I guess for me below 50% relative hum is the magic number. |
|
| Back to top |
|
|
halloweenfiend666
Joined: 19 Jun 2010
Posts: 15
Location: cleveland, oh
|
| Posted: Sat Jul 17, 2010 2:20 pm Post subject: Deft S/S over RR Primer...??? |
|
|
| Hey guys has anyone here sprayed Deft S/S over RR Primer? Im at the primer stage and I've shot a couple coats and can see some small imperfections/nicks and I'm wondering if spraying Deft S/S could fill up some of these. I did do a drop fill with the stuff on a low spot that was caused by wood filler (melted the primer a bit, still not level sanded either). |
|
| Back to top |
|
|
S.O.S
Joined: 08 Jul 2010
Posts: 25
|
| Posted: Sat Jul 17, 2010 3:34 pm Post subject: Re: rule of three's/spraying metallics |
|
|
| halloweenfiend666 wrote: | Thanks guys.
Still unsure about the Rule of Three's? Can someone explain. Oh, and I'm spraying a metallic color and I understand that it's generally a good idea to spray the color with some light clear to lock the flakes in place, but how long should one wait to put that light coat on after all of the color? |
If your spraying metallic, spay more lighter coats rather than fewer heavy coats to prevent mottling, pearl and metallic tend to be a little thinner and will run and sag easier. And yes, put clear over the paint, don't sand metallic or pearls. You'll get marks.
Check the tech sheets on the products your using. Rules are different for different products. They will explain the proper application in regards to re-coat time windows, recommended sanding grit before application etc. These can usually be found on-line, or from where you purchased.
Have fun. |
|
| Back to top |
|
|
S.O.S
Joined: 08 Jul 2010
Posts: 25
|
| Posted: Sat Jul 17, 2010 3:37 pm Post subject: Re: Deft S/S over RR Primer...??? |
|
|
| halloweenfiend666 wrote: | | Hey guys has anyone here sprayed Deft S/S over RR Primer? Im at the primer stage and I've shot a couple coats and can see some small imperfections/nicks and I'm wondering if spraying Deft S/S could fill up some of these. I did do a drop fill with the stuff on a low spot that was caused by wood filler (melted the primer a bit, still not level sanded either). |
If your only in the primer stage, fix it now, you'll be glad you did. Even if you have to back up a step and sand back. If you see it now, you'll see it later after all you hard work.
Someone correct me if I'm wrong on this but, you should be able to seal over the sanded primer, it's job is to seal off what's below. But as I said, your not to far ahead that you can't just sand it back and level the spots and then re seal and prime. |
|
| Back to top |
|
|
DagerOne
Joined: 14 Feb 2010
Posts: 23
Location: Fishers, IN
|
| Posted: Thu Jul 29, 2010 12:34 pm Post subject: |
|
|
This has been my issue here in Indiana. I've been wanting to finish my G400 for months, but the humidity simply hasn't approached 55%, let alone anything lower.
Would there be any harm to, say, spraying the sealer and primer coat, then simply leaving it like that for the necessary days/weeks/etc. until I get some drier days? There's no harm in leaving it in primer indefinitely, is there? |
|
| Back to top |
|
|
atubbs
Joined: 23 Jan 2010
Posts: 445
Location: Mississippi
|
| Posted: Thu Jul 29, 2010 1:46 pm Post subject: |
|
|
Would someone post a picture of what a blushing clear or color coat looks like? I hear the term and kind of understand it, but I'd really like to be able to see it. Is it hazy looking?
Thanks!
Adam
_________________
Hey, Watch this! |
|
| Back to top |
|
|
aquietcabin
Joined: 20 Mar 2010
Posts: 405
Location: Woodstock, IL
|
| Posted: Thu Aug 12, 2010 9:44 am Post subject: |
|
|
so the relative humidity doesn't affect the primer coats right. i want to start this weekend but there seems to be no break in the humidity in the near future. color and clear can wait for now
_________________
........i'll remain unperturbed by the joy and the madness that i encounter everywhere i turn. |
|
| Back to top |
|
|
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
