News:




  • August 17, 2017, 07:31:33 AM

Login with username, password and session length

Author Topic: NAPA DC-540 PRIMER  (Read 2022 times)

Offline Frank Imbriaco

  • Trade Count: (0)
  • Captain
  • *****
  • Posts: 509
  • At the 69 Willow Grove NATS with J.D. FALCON II
NAPA DC-540 PRIMER
« on: April 15, 2017, 05:45:17 PM »
Thinking about saving some dough and possibly weight by no longer using a 2K urethane primer and instead trying the NAPA DC-540 .
Couple of questions :
1) Any issues with it over  Randolph low-taut nitrate dope ?
2) Likely will apply white  Dupont  Chromaseal   over it .  I've used this stuff before, but only over 2K urethane primer. Any issues with it over NAPA DC-540 ?
3) Colors will be Dupont Basecoat followed by Dupont 2K  Chroma Clear .

Thanks


Offline Walter Hicks

  • 2017
  • Trade Count: (0)
  • Commander
  • *
  • Posts: 187
Re: NAPA DC-540 PRIMER
« Reply #1 on: April 15, 2017, 06:07:44 PM »
I had some bubbling issues but not sure it is directly related to the primer. I now use 2 part auto primer. I use base coat clear coat auto paint.

Offline john e. holliday

  • 2017
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 18437
Re: NAPA DC-540 PRIMER
« Reply #2 on: April 15, 2017, 09:12:31 PM »
I used it over base coats of butyrate dope that had set for several weeks.   Then the automotive color was applied after sanding with 300 grit paper.  Final coat was 2 part automotive clear.  I am not a finisher so there are some rough spots to the feel.
I was always taught to respect my elders, but it keeps getting harder to find one.
Today I broke my personal record for most consecutive days lived.
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530

Online Tom Luciano

  • 2015
  • Trade Count: (0)
  • Commander
  • *
  • Posts: 323
Re: NAPA DC-540 PRIMER
« Reply #3 on: April 16, 2017, 06:08:21 AM »
I had no issue using over non taut nitrate.
Tom
AMA 13001

Offline Fredvon4

  • 2017
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 1088
Re: NAPA DC-540 PRIMER
« Reply #4 on: April 16, 2017, 07:46:39 AM »
I did one plane a year back with Nitrate initial then DC540 I think too soon... 2nd day and in a hurry first coat of the primer immediately crinkled up in several small spots....grrr  on the remainder of the fuse I backed off  a few inches and sprayed very lite coat, then a few minuets later a good wet coat..... and no problems

good news is, once DC 540 was good n dry the crinkly areas sanded down just fine

I am sure I put the DC540 on too wet over not well gassed off Dope
"A good scare teaches more than good advice"

"Worry is the interest you pay when you borrow trouble"

"The unpunished never learn"

Fred von Gortler IV

Offline Frank Imbriaco

  • Trade Count: (0)
  • Captain
  • *****
  • Posts: 509
  • At the 69 Willow Grove NATS with J.D. FALCON II
Re: NAPA DC-540 PRIMER
« Reply #5 on: April 17, 2017, 10:08:15 AM »
Ok. Thanks to all. Still need to know how it reacts with  Dupont 2k sealer  followed by Dupont  base coat colors / 2k clear coat .

Offline john e. holliday

  • 2017
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 18437
Re: NAPA DC-540 PRIMER
« Reply #6 on: April 17, 2017, 10:35:38 AM »
If in doubt try it on sample piece of work.  I usually wait a couple of day for base coat of what ever to cure/dry/air out.   Before putting color on I usually put a seal coat of clear.  I was told one time not to put on heavy coats,  go lightly with the paint until you get the layer you want to work.
I was always taught to respect my elders, but it keeps getting harder to find one.
Today I broke my personal record for most consecutive days lived.
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530

Online Matt Colan

  • N-756355
  • AMA Member
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 3009
Re: NAPA DC-540 PRIMER
« Reply #7 on: April 17, 2017, 03:29:05 PM »
Ok. Thanks to all. Still need to know how it reacts with  Dupont 2k sealer  followed by Dupont  base coat colors / 2k clear coat .

I used it on my last plane without any issues using the 2K sealer or any of the other chromabase colors/paints. 
Matt Colan

Offline Walter Hicks

  • 2017
  • Trade Count: (0)
  • Commander
  • *
  • Posts: 187
Re: NAPA DC-540 PRIMER
« Reply #8 on: April 17, 2017, 09:10:21 PM »
Matt did  you use basecoat auto paint for the color?

Online Matt Colan

  • N-756355
  • AMA Member
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 3009
Re: NAPA DC-540 PRIMER
« Reply #9 on: April 18, 2017, 03:13:44 PM »
Matt did  you use basecoat auto paint for the color?

I used the 2K sealer that Frank was asking about on my last plane.  It's an automotive sealcoat that I used as my basecoat on the last two airplanes.  the Dupont Chromabase went over the sealer without issue
Matt Colan

Offline Balsa Butcher

  • 2017
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 2252
  • High Desert Flier
Re: NAPA DC-540 PRIMER
« Reply #10 on: April 19, 2017, 07:46:49 PM »
Has anyone used DC-540 as a filler/primer for a dope finish? I am using it for the first time and so far have been impressed. Not to the final color/clear stage of the finish yet though. 8)
« Last Edit: April 20, 2017, 08:38:35 AM by Balsa Butcher »
Pete Cunha
Sacramento CA.
AMA 57499

Online Tom Luciano

  • 2015
  • Trade Count: (0)
  • Commander
  • *
  • Posts: 323
Re: NAPA DC-540 PRIMER
« Reply #11 on: April 20, 2017, 03:39:10 PM »
Yes, quite a few of us have used it  with dope with good results.

Tom
AMA 13001

Offline Balsa Butcher

  • 2017
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 2252
  • High Desert Flier
Re: NAPA DC-540 PRIMER
« Reply #12 on: April 20, 2017, 06:40:32 PM »
Great! and thanks. That is the answer I was hoping for.  8)

Update: Used it as a base for dope. It worked well over silkspan or fiberglass. However it did not adhere well over carbon fibre veil. Crinkled in places. Just going to live with that however use over CF is not recommended.
« Last Edit: August 10, 2017, 08:48:43 AM by Balsa Butcher »
Pete Cunha
Sacramento CA.
AMA 57499

Offline Frank Imbriaco

  • Trade Count: (0)
  • Captain
  • *****
  • Posts: 509
  • At the 69 Willow Grove NATS with J.D. FALCON II
Re: NAPA DC-540 PRIMER
« Reply #13 on: May 30, 2017, 05:17:47 PM »
Just ordered a half dozen cans.  I see that it is a Dupli-Color Product
 Are guys re-coating  right after it flashes off or waiting hours or longer for full cure and  then scuffing each coat in between ?
Thanks

Offline Frank Imbriaco

  • Trade Count: (0)
  • Captain
  • *****
  • Posts: 509
  • At the 69 Willow Grove NATS with J.D. FALCON II
Re: NAPA DC-540 PRIMER
« Reply #14 on: May 30, 2017, 05:28:18 PM »
Just read up on product specs... and there it sez that it is a Sherwin-Williams product.

Online Sean McEntee

  • Trade Count: (0)
  • Captain
  • *****
  • Posts: 638
Re: NAPA DC-540 PRIMER
« Reply #15 on: May 30, 2017, 05:47:13 PM »
I used it on my current build.  Looking pretty good so far.  Ive been spraying, letting it dry for about 20 minutes, sand it off and dope on top of it with no issues.

Has anyone messed with the DC-541?  Its a rust-colored primer of the same brand

Offline RknRusty

  • 2017
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 2142
    • My Tube channel
Re: NAPA DC-540 PRIMER
« Reply #16 on: May 30, 2017, 08:04:54 PM »
I used it on my current build.  Looking pretty good so far.  Ive been spraying, letting it dry for about 20 minutes, sand it off and dope on top of it with no issues.

Has anyone messed with the DC-541?  It's a rust-colored primer of the same brand
Same for me regarding the drying time, DC540 dries very quickly. Depending on how picky I am about the project, I sand it off and recoat several times. I have not tried the 541, but I did try the Duplicolor brand white "sandable" primer hoping for good coverage with less of my white base color. I was hoping, even expecting it to be basically the same stuff.... BIG BIG BIG mistake. It ain't even close. It did dry just as fast, but was as hard as a rock and hardly sandable. I gave up after I ran out of elbow grease, and needless to say, I did not recoat it like I do with the 540.
Rusty
DON'T PANIC!
Rusty Knowlton
... and never Ever think about how good you are at something...
while you're doing it!

Jackson Flyers Association (a.k.a. The Wildcat Rangers(C/L))- Fort Jackson, SC
Metrolina Control Line Society (MCLS) - Huntersville, NC - The Carolina Gang
Congaree Flyers - http://www.congareeflyer.com
www.coxengineforum.com

Offline steve pagano

  • Trade Count: (0)
  • Commander
  • ****
  • Posts: 396
Re: NAPA DC-540 PRIMER
« Reply #17 on: July 25, 2017, 09:02:16 PM »
I love the easy of it ( spray on 15-20 minutes later your sanding off.) What grit sand paper do you guys prefer and has anyone tried wet sanding to cut down on the dust factor ?
Success isn't a destination.It's a journey!!!!!
A.M.A. 820-823

Offline RknRusty

  • 2017
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 2142
    • My Tube channel
Re: NAPA DC-540 PRIMER
« Reply #18 on: July 25, 2017, 10:26:02 PM »
I love the easy of it ( spray on 15-20 minutes later your sanding off.) What grit sand paper do you guys prefer and has anyone tried wet sanding to cut down on the dust factor ?
I wrap and pin a sheet of 320 grit 3M Sandblaster paper around one of the sponge type sanding pads from the paint section of Lowes. Then with a small Box-fan laying face down on top of an old bottle crate and an A/C filter on top, I sand over that. Go lightly until you begin to see the wood underneath the primer. All the dust is trapped in the filter and the sanding pad can be quickly and completely cleaned with a paintbrush for the next round of priming and sanding. DC 540 is really easy to use and plays well with dope or Lacquer. for the colors, I use rattlecan Duplicolor acrylic lacquer, "Perfect Match" auto paint from the auto parts store. It dries as fast as the DC and covers well with its adjustable nozzle which shoots a knife-edge triangular pattern, vertical or horizontal depending on your spray tip adjustment.

I thought DC stood for Duplicolor, but others say Sherwin Williams. Maybe they make it for Duplicolor.
Rusty
DON'T PANIC!
Rusty Knowlton
... and never Ever think about how good you are at something...
while you're doing it!

Jackson Flyers Association (a.k.a. The Wildcat Rangers(C/L))- Fort Jackson, SC
Metrolina Control Line Society (MCLS) - Huntersville, NC - The Carolina Gang
Congaree Flyers - http://www.congareeflyer.com
www.coxengineforum.com


Tags: