login   |    register
Cars: Other Racing
For automotive racing topics not already covered.
Hosted by Joel Willstein
Nunu 1/24 scale Kremer Porsche 935 K3
Joel_W
Staff MemberAssociate Editor
AUTOMODELER
Visit this Community
New York, United States
Member Since: December 04, 2010
entire network: 10,696 Posts
KitMaker Network: 117 Posts
Posted: Wednesday, February 26, 2020 - 04:42 AM UTC
Michael,
1:1 using Mr. Finisher 1,500 is fine. The 2:3 ratio is just so I can use the same technique that I use for those super thinned Gravity and Zero paints. Honestly, if I've got a lot of filler to deal with, I would opt for the 1:1 mix ratio.

As for the final clear gloss coat, just slow down that pass a little but don't stop to get a little more in some places. Also you can thin out that coat about 10-20% more. Then let it dry and cure for a min of 3 days. Then then the magic of rubbing out, polishing, and waxing takes place.

Joel
Cosimodo
#335
Visit this Community
Auckland, New Zealand
Member Since: September 03, 2013
entire network: 1,441 Posts
KitMaker Network: 6 Posts
Posted: Tuesday, February 25, 2020 - 11:39 AM UTC
Great job Joel. I follow your painting methodology and I agree that the results for me have improved a lot though I am still 1:1 on the primer mix using the same ingredients. I think where I need more practice is the final gloss coat which I still haven't achieved a great finish yet i.e. the mirror effect.

cheers
Michael
Joel_W
Staff MemberAssociate Editor
AUTOMODELER
Visit this Community
New York, United States
Member Since: December 04, 2010
entire network: 10,696 Posts
KitMaker Network: 117 Posts
Posted: Monday, February 24, 2020 - 10:48 AM UTC

Quoted Text

Great 3P's (prep, primer and paint) job on the shell Joel, it certainly won't take much effort to get it really shining now!

Cheers, D



D,
Glad that you liked my efforts on the 3P's. Still got plenty to paint on the shell before I can start decaling, but she's starting to certainly look the part.

Joel
Joel_W
Staff MemberAssociate Editor
AUTOMODELER
Visit this Community
New York, United States
Member Since: December 04, 2010
entire network: 10,696 Posts
KitMaker Network: 117 Posts
Posted: Monday, February 24, 2020 - 10:46 AM UTC
Russell,
Why thank you my friend, it's much appreciated.

Joel
AussieReg
Staff MemberAssociate Editor
AUTOMODELER
#007
Visit this Community
Victoria, Australia
Member Since: June 09, 2009
entire network: 7,054 Posts
KitMaker Network: 557 Posts
Posted: Monday, February 24, 2020 - 09:41 AM UTC
Great 3P's (prep, primer and paint) job on the shell Joel, it certainly won't take much effort to get it really shining now!

Cheers, D
RussellE
#306
Visit this Community
Victoria, Australia
Member Since: June 27, 2010
entire network: 3,423 Posts
KitMaker Network: 22 Posts
Posted: Monday, February 24, 2020 - 08:44 AM UTC
Top notch effort on the paint work Joel!
Joel_W
Staff MemberAssociate Editor
AUTOMODELER
Visit this Community
New York, United States
Member Since: December 04, 2010
entire network: 10,696 Posts
KitMaker Network: 117 Posts
Posted: Monday, February 24, 2020 - 07:39 AM UTC
Mark,
By day 2 I was really considering a quick run to the Drug Store for some Pedialite, but being basically lazy, I just stayed the course.

Your color coat will only be as smooth and consistent as you primer coat. Prep is just as important as the color coats.

Believe me, when I made the switch from military aircraft is was like I got hit with a 2x4 on the top of my head. Damn gloss paint jobs are so much harder, and there's no weathering to cover up my screw ups. I use Paul's basic technigue from International Scale Modeler. Just checkout a few of his painting vids, and you'll have it down to a science. If I can do it, anyone can.

Joel
md72
#439
Visit this Community
Washington, United States
Member Since: November 05, 2005
entire network: 4,621 Posts
KitMaker Network: 549 Posts
Posted: Monday, February 24, 2020 - 07:19 AM UTC
Persistence pays off. Really shows well, thanks for sharing the technique. Usta feed the baby Pedialite, rice and oatmeal when those things happened.

Doubt I have the primer coat smooth as glass on my '51 Ford, and I want a used look, but I'm going to try your thinning and timing when I get to the color coat on the shoe-box.
Joel_W
Staff MemberAssociate Editor
AUTOMODELER
Visit this Community
New York, United States
Member Since: December 04, 2010
entire network: 10,696 Posts
KitMaker Network: 117 Posts
Posted: Monday, February 24, 2020 - 06:03 AM UTC
Time to bring you all up to date on my 935 K3 build.

Last week I primed the prepared body shell, and the two sub assemblies that comprise the rear wing. As usual my go to primer is Mr.Finisher's Light Gray 1,500 thinned 2:3 with Mr.Leveling #400 thinner. Since this mixer is extremely thin, it took a tack coat, then 3 wet coats to get an even Primer coat.







One thing I really like about this primer is that the gray is so light, that I've never had to use the bottle of Tamiya White Primer I bought years ago. When using a mixture this thin, any filler really needs to be almost the same color as the plastic, or it will end up showing through the primer coat. So I've switched to Tamiya gray or white filler, giving up Green Stuff and Bondo. When I do have a color mismatch, then I'm forced to go with a 1:1 ratio. The only difference is that I have more rubbing out to do.

And speaking of rubbing out, the following day just a few very lite passes with a wet piece of Tamiya #3,000 sponge got the surface smooth as glass.

I was going to paint the color coat that day but I came down with my 1st winter illness, and hopefully my last of the season. A damn stomach virus decided to pay me an unwanted visit. So while I could go online as I was only 15 ft from the bathroom, but couldn't chance trying to airbrush. So I waited till the end of week when I was feeling somewhat better, but not completely over it.

I prepped my Grex airbrush with the .5mm setup, set the flow rate to 15 psi, put on my most uncompfortable mask, and one glove on my holding hand. Then mixed the bottle of my choice of color: Gravity GC-102 Titanium White rather then Porsche White. The reason being that Kremer with all the body Modifications would have had to repaint the entire car, and from the pictures it does look like bright white to me.



My AB procedure still is just a tack coat, let the paint cure for 3 min, then in this case 4 color coats with 5 min between coats. Here's the end result straight from my drying bin. No rubbing or polishing to get ready for decaling as yet. The paint is super smooth, just like the primer coat under neath of it. I'm more then satisfied with it, and that my painting procedures are finally starting to show the level and consistancy I've been after for quite some time.











Thanks for taking the time to stop by and checkout my update. It's always greatly appreciated.

Joel



Dixon66
Visit this Community
New Hampshire, United States
Member Since: December 12, 2002
entire network: 1,058 Posts
KitMaker Network: 154 Posts
Posted: Thursday, February 20, 2020 - 11:18 AM UTC
Obviously, Damian did too. Just glad I didn't post hotel sized fridge. ROTFLMYAO
md72
#439
Visit this Community
Washington, United States
Member Since: November 05, 2005
entire network: 4,621 Posts
KitMaker Network: 549 Posts
Posted: Thursday, February 20, 2020 - 08:26 AM UTC
Not enough glue in my morning coffee.

Quoted Text

hotel room size fridge


I read that all wrong for the first 5-10 times.
GaryKato
Visit this Community
California, United States
Member Since: December 06, 2004
entire network: 3,642 Posts
KitMaker Network: 487 Posts
Posted: Thursday, February 20, 2020 - 07:43 AM UTC
Gary,
My dream job if I was qualified, which I'm not by any stretch of the imagination.

The Indy Cal decals arrived earlier this week and look great. As all of Michael's decals they're just one big decal and you have to cut them apart as close as possible to the inks or it's flash city. He also doesn't supply any decal placement, so I'm going to have to make sure that I have all the info before I start decaling in a week or so.

I'm betting that you're right that the car you heard was most likely a Porsche 935 series, has Garretson back them drove them in some sort of arrangement with Dick Barbour (Racing).

Joel

Joel_W
Staff MemberAssociate Editor
AUTOMODELER
Visit this Community
New York, United States
Member Since: December 04, 2010
entire network: 10,696 Posts
KitMaker Network: 117 Posts
Posted: Wednesday, February 19, 2020 - 02:06 AM UTC
David,
You just might need to expand your man cave to accommodate that commercial refreg. and still have the room you need for building and displaying your models.

Joel
Dixon66
Visit this Community
New Hampshire, United States
Member Since: December 12, 2002
entire network: 1,058 Posts
KitMaker Network: 154 Posts
Posted: Tuesday, February 18, 2020 - 01:03 PM UTC

Quoted Text


Quoted Text

You all gave me a thought, I'm going to add in a dorm or hotel room size fridge in my workshop.



Now we're talking, a fridge the size of a hotel room!



A walk-in fridge from a restaurant? Sounds good to me.... Maybe my beer wouldn't go warm then.
AussieReg
Staff MemberAssociate Editor
AUTOMODELER
#007
Visit this Community
Victoria, Australia
Member Since: June 09, 2009
entire network: 7,054 Posts
KitMaker Network: 557 Posts
Posted: Tuesday, February 18, 2020 - 10:40 AM UTC

Quoted Text

You all gave me a thought, I'm going to add in a dorm or hotel room size fridge in my workshop.



Now we're talking, a fridge the size of a hotel room!
RussellE
#306
Visit this Community
Victoria, Australia
Member Since: June 27, 2010
entire network: 3,423 Posts
KitMaker Network: 22 Posts
Posted: Tuesday, February 18, 2020 - 10:05 AM UTC
ooo-a bar fridge under the work bench-now there's a potentially dangerous combination
Joel_W
Staff MemberAssociate Editor
AUTOMODELER
Visit this Community
New York, United States
Member Since: December 04, 2010
entire network: 10,696 Posts
KitMaker Network: 117 Posts
Posted: Tuesday, February 18, 2020 - 04:44 AM UTC
David,
Now there's a idea that never crossed my mind. But somehow I can just hear my wife SCREAMING ENOUGH IS ENOUGH ALREADY

I've turned my one table workbench down in the basement into a full 12x12 main floor room as a combination modeling and computer man cave, but the addition of a small 6.1ci refreg, might really be pushing it past the infamous Red Line.

But if you can pull it off, you get the AutoModeler Medal of Merit for 2020 for sure.

Joel
Dixon66
Visit this Community
New Hampshire, United States
Member Since: December 12, 2002
entire network: 1,058 Posts
KitMaker Network: 154 Posts
Posted: Tuesday, February 18, 2020 - 03:32 AM UTC
You all gave me a thought, I'm going to add in a dorm or hotel room size fridge in my workshop when I finally get around to updating from more than just a desk. Place to keep the CA, masking fluids, and a drink or two cold.

Probably not beer though, I always seem to forget it is there as I get engrossed in building or painting and it goes too warm by the time I've gone to drink some more.
Joel_W
Staff MemberAssociate Editor
AUTOMODELER
Visit this Community
New York, United States
Member Since: December 04, 2010
entire network: 10,696 Posts
KitMaker Network: 117 Posts
Posted: Tuesday, February 18, 2020 - 01:55 AM UTC
Russell,
I've got a $9 bottle of Liquid mask on the way from Sprue Brothers, so I need to keep it in tip top condition till the last drop. I would never have thought of also storing it in the refreg. But I'm going to go that route.

My plan so that my lovely wife doesn't threaten my life, is to store my CA and liquid mask in a tallish plastic bin. Neat, clean, and tidy. Sure hope that does the trick.

Joel
RussellE
#306
Visit this Community
Victoria, Australia
Member Since: June 27, 2010
entire network: 3,423 Posts
KitMaker Network: 22 Posts
Posted: Monday, February 17, 2020 - 11:27 AM UTC
Yep, store all of your CA in the fridge, Joel, even the unopened bottles. I've even taken to keeping liquid masking fluid in the fridge as it seems to extend its shelf life too
Joel_W
Staff MemberAssociate Editor
AUTOMODELER
Visit this Community
New York, United States
Member Since: December 04, 2010
entire network: 10,696 Posts
KitMaker Network: 117 Posts
Posted: Monday, February 17, 2020 - 10:31 AM UTC
Russell,
Thanks for the tips. To bad that the warmest room in the entire house is my computer/modeling room thanks to all the various computer equipment I have running that throws off more heat then my dinner usually does.

I'll have to negotiate with my better half about storing 3 or 4 bottles of CA glue in the refreg. My motto is better safe then sorry.

Joel
RussellE
#306
Visit this Community
Victoria, Australia
Member Since: June 27, 2010
entire network: 3,423 Posts
KitMaker Network: 22 Posts
Posted: Monday, February 17, 2020 - 08:24 AM UTC

Quoted Text

Russell,
Thanks for checking out the start of my build. As always it's greatly appreciated.

I'm also looking forward to how I deal with all that PE. One thing I've changed is my brand of CA glue. I'm now using the Loctite regular and Gel over the Gorilla CA, which is even thicker then the Loctite Gel. For the side plates I used the Loctite regular CA and the bonding time allowed some adjustments, then set perfectly.

Joel



Hi Joel

one thing I've learnt in all my fiddlings with CA and photo etch is to keep my (ZAP) CA in the refrigerator. Nothing makes CA go off quicker than warm temperatures
Generally I use the medium as it gives a good mix between setting time (not too quick) and flow.
Strangely though I find PVA (white glue/gator grip) useful for photo etch too, but it's really a case of horses for courses
Joel_W
Staff MemberAssociate Editor
AUTOMODELER
Visit this Community
New York, United States
Member Since: December 04, 2010
entire network: 10,696 Posts
KitMaker Network: 117 Posts
Posted: Sunday, February 16, 2020 - 03:26 AM UTC
Russell,
Thanks for checking out the start of my build. As always it's greatly appreciated.

I'm also looking forward to how I deal with all that PE. One thing I've changed is my brand of CA glue. I'm now using the Loctite regular and Gel over the Gorilla CA, which is even thicker then the Loctite Gel. For the side plates I used the Loctite regular CA and the bonding time allowed some adjustments, then set perfectly.

Joel
RussellE
#306
Visit this Community
Victoria, Australia
Member Since: June 27, 2010
entire network: 3,423 Posts
KitMaker Network: 22 Posts
Posted: Saturday, February 15, 2020 - 10:43 PM UTC
Good to see you couldn't stay away for too long Joel!

A great topic and nice run down on the history of the car.

Looking forward to seeing how that AM photo etch goes with the kit
Joel_W
Staff MemberAssociate Editor
AUTOMODELER
Visit this Community
New York, United States
Member Since: December 04, 2010
entire network: 10,696 Posts
KitMaker Network: 117 Posts
Posted: Saturday, February 15, 2020 - 02:43 AM UTC

Quoted Text

Joel,
I've been a Porsche owner for nearly 50 years and a competitive driver (no more - eyes) for most of those years. Your historic journey of these cars is spot on. I also have the NuNu car, and will build another version because of the Whittington brothers venture into supporting a racing habit with being drug dealers. I know, it's still history but I won't gentrify it. I'll probably make it into a Coke version.
Just wanted you to know that your history lesson is spot on. You DO know your Porsche.



Patrick,
Thank you for what you posted, it certainly has a valid ring to it.

While we can't change history, the Kremer car did win the 1979 LeMans race due in great part to the rain with Klaus Ludwig, the Rainmaster driving the last stint. And yes, Bill & Don Whittington made their fortunes importing drugs. Never heard of any other driver or team having hundreds of thousands of dollars in a canvas bag with them at a track. Eventually they got caught along with I believe Sr & Jr. Paul, and all 4 became quests of the US Gov't for quite some time.

I purposely left all of that out of my narrative as it didn't seem to have much to do with the 9835 K3's place in the Porsche Racing History. This is the other main reason I opted NOT to use the kit decals but went for the Apple car instead which I'm duplicating the markings from the Riverside race.

Beemax is coming out with a 935 K3 as well some time this year, the Paul Newman , Rolf Stommelen, and Dick Barbour #70 Hawaiian Tropic car that finished second. This car had a completely different rear wing that I've seen labeled as a factory 935 79.

This is the most confusing Porsche racing era I've yet encountered.

Joel