How to build a resin kit

In honor of one of the best slot car builders in our hobby.
Share your chassis & scratchbuilt artwork here.

Re: How to build a resin kit

Postby jmsh54 » Sat Sep 08, 2012 8:28 am

Greetings, David thank yoou for posting up this information. It is a great help. The most important part is cleaning up the body before painting. Regards, John
User avatar
jmsh54
HRW SlotCar Veteran!
 
Posts: 177
Joined: Wed Sep 05, 2012 8:13 pm
Location: Elberta/Frankfort Mich.

Re: How to build a resin kit

Postby dreinecke » Sat Sep 08, 2012 10:20 am

Glad to be of some service. If the women don't find you handsome, they should at least find you handy.

And John, you are correct...pre-paint cleaning prep is absolutely important!
User avatar
dreinecke
King of the Dum-Dums!
 
Posts: 7117
Joined: Wed Aug 08, 2012 5:39 pm
Location: Colorado

Re: How to build a resin kit

Postby balsaworks » Wed Sep 26, 2012 3:49 am

Lots of useful tips here, great thread!
I have used lamp heat to adjust the shape of resin bodies, it has worked very well, not sure if it applies to all types of resin.
An old fashioned desk lamp with a 60W bulb is a perfect heat chamber for this purpose.
You can hold the body in your hands, close to the bulb, and move it around a bit for a few minutes to heat up the area that needs to be adjusted. After a while the heated area will begin to soften and feel rubbery. Make the correction, remove the body, and hold it still in the corrected position until it cools down and gets solid again. Repeat as required.
Image

Below is a DBR1 body with the rear end corrected using lamp heat. The opening for the wheel had to be adjusted afterwards of course.
I made a paper pattern first and then used a round sanding stick to restore the opening to the right shape.
Image
Image
User avatar
balsaworks
HRW SlotCar Veteran!
 
Posts: 120
Joined: Wed Sep 05, 2012 11:41 pm

Re: How to build a resin kit

Postby dreinecke » Fri Sep 28, 2012 10:05 am

Balsa - great illustration! Thanks for adding that, I think folks will find those pics invaluable!
User avatar
dreinecke
King of the Dum-Dums!
 
Posts: 7117
Joined: Wed Aug 08, 2012 5:39 pm
Location: Colorado

Re: How to build a resin kit

Postby balsaworks » Sat Mar 16, 2013 4:59 am

There was a discussion recently in another forum about what tools to use to finish edges and openings in resin bodies.
I’ve looked up some of my favourite tools and thought they might be of interest to share.
David has already mentioned that sanding sticks are very useful. A couple of years ago I stumbled upon a local jewelry tool shop and found a lot of interesting stuff. Among many other things they had an incredibly good selection of needle files and sanding sticks in shapes that I hadn’t seen before.
The better the match between the tool and the piece that you're working on, the better the chance of a good result.
I use these files & sticks all the time and regularly come back to that store as the sticks wear out. Shops like these can be found on the net too of course.
Image
Image
Image
Image
Image
User avatar
balsaworks
HRW SlotCar Veteran!
 
Posts: 120
Joined: Wed Sep 05, 2012 11:41 pm

Re: How to build a resin kit

Postby BRP32 » Wed Jun 05, 2013 10:40 am

Awesome How to!

Thanks David!

Wayne (Bolton's Speed Shop) :D :D :D
BRP32
HRW SlotCar Veteran!
 
Posts: 1211
Joined: Wed Sep 05, 2012 6:53 pm
Location: Cleveland, Ohio

Re: baking soda and super glues

Postby GPGarages » Tue Dec 24, 2013 7:41 pm

With regard to this technique, I'll say don't do it! This was a popular way to fill on plastic models back about 25 years ago. It does work......BUT, it may leech a brown, sticky, bleach-smelling goo at some later date. Through the paint and decals, if any. By later date, I mean anytime from a year to 20 year later......I have quite a few 1/72nd and 1/48th scratchbuilt and vac-form models that have either needed repairs or have been ruined.
For larger, thicker areas, I prefer a filled epoxy material like J-B Weld "Quick". I also use this to mount body posts in bodies. For smaller, thinner areas, use any of the available putties, like either Squadron Green or White, or a red spot surfacing putty sold at auto parts and paint shops. There are also some good fillers made by Gunze Sangyo in a paste form found at better plastic model type hobby shops. Hook up with your local IPMS plastic modeler group to find out more.
Dan
GPGarages
 
Posts: 15
Joined: Sun Dec 08, 2013 3:02 pm

Re: How to build a resin kit

Postby waaytoomuchintothis » Tue Dec 24, 2013 7:55 pm

This thread is more than a year old. What technique are you talking about? The baking soda or the heat lamp, or what?
"Never trust a quote from the internet."
--Abraham Lincoln
User avatar
waaytoomuchintothis
"Seasoned SlotRacer"
 
Posts: 6444
Joined: Wed Aug 29, 2012 7:16 pm
Location: Chesterfield, Virginia

Re: How to build a resin kit

Postby dreinecke » Tue Dec 24, 2013 11:59 pm

I think Dan is referring to CA glue and baking soda probably. I've been using it for about 12 years with no problem, but perhaps there are issues when it goes longer?

I'll await Dan's clarification and see.
User avatar
dreinecke
King of the Dum-Dums!
 
Posts: 7117
Joined: Wed Aug 08, 2012 5:39 pm
Location: Colorado

Re: How to build a resin kit

Postby GPGarages » Sat Dec 28, 2013 1:10 am

All, my experience with baking soda and super glues was related to flat finished military models. It is possible that a gloss finish may seal the surface and prevent the problem. I'll check with some of my local IPMS types to see what they think. I just quit using the technique about 10 years ago due to several ruined models. Your experience may vary.
dan
GPGarages
 
Posts: 15
Joined: Sun Dec 08, 2013 3:02 pm

Re: How to build a resin kit

Postby dreinecke » Sat Dec 28, 2013 9:38 am

Dan - interesting to hear. My buddy Shawn who taught me casting has used it since the 80's with no issues. I wonder if it does have something to do with paints. Both of us always use automotive lacquers over it.
User avatar
dreinecke
King of the Dum-Dums!
 
Posts: 7117
Joined: Wed Aug 08, 2012 5:39 pm
Location: Colorado

Re: How to build a resin kit

Postby buspor63 » Thu Jan 30, 2014 12:24 pm

What is a good technique for thinning thick areas? I have a "burr ball" for my Dremel, I also have some bits for my die grinder, but that may be too big. How do you tell when this is thin enough, scissor calipers?
buspor63
HRW SlotCar Veteran!
 
Posts: 555
Joined: Thu Sep 06, 2012 11:46 pm

Re: How to build a resin kit

Postby buspor63 » Thu Jan 30, 2014 5:21 pm

bibbster wrote: I have a hobby light that I hold the body up to in order to make sure I don't go too thin. I pick an area on the body that is thin and has a good solid feel to it, then sand away until the same amount of light passes through. Not real scientific, but it works for me.


That was a good tip, it worked well for me.
buspor63
HRW SlotCar Veteran!
 
Posts: 555
Joined: Thu Sep 06, 2012 11:46 pm

Re: How to build a resin kit

Postby TuscoTodd » Fri Jan 31, 2014 4:03 pm

bibbster wrote:...the table top...:lol:


LOL!!! Glad I'm not the only one that has done something like that... :oops:
User avatar
TuscoTodd
HRW Bouncer
 
Posts: 6296
Joined: Sat Aug 17, 2013 11:25 am
Location: Rural Ohio

Re: How to build a resin kit

Postby TuscoTodd » Fri Jan 31, 2014 4:27 pm

Ember wrote:Intentionally or un?


Mine was "un" and put a nice gouge in the oak. :(
It is a great reminder every time I see it "not" to use the dining room table as a temporary work bench (at least without something "oops" proof underneath!)
User avatar
TuscoTodd
HRW Bouncer
 
Posts: 6296
Joined: Sat Aug 17, 2013 11:25 am
Location: Rural Ohio

PreviousNext

Return to The Marty Stanley Scratchbuilders Shop

Who is online

Users browsing this forum: No registered users and 2 guests