Modelhaus resin prep

[yellowsportwagon]

I bought a Modelhaus resin kit recently. To clean the mold release off any special tricks or just the old bleach white followed by dish soap method. Done tons of resin but never a Modelhaus.

[Greg Wann]

It seems bleachwhite is popular but I'm  not sure why purple cleaner won't do the job.  It is a strong degreaser.  I use Zep brand from Home Depot to remove chrome from parts.

[thatz4u]

try soaking in Dawn dish soap first, less toxic...use original strength Dawn...

[boss 302 mustang]

I think that any of the products like Super Clean will melt the resin.  Stick to Westley's

[yellowsportwagon]

I’m familiar with resins. Purple cleaners screw them up I just am not familiar with Modelhaus products. Is there a preferred method for their stuff is my question.

[keyser]

MH always recommended Bleche Wite. Hth. 

[Ramfins59]

I have a Tupperware style container that contains 2 bottles of Westley's Bleche White that I've always used to clean resin parts before working on them.  It works great all the time.

[yellowsportwagon]

I soaked it a few hours then scrubbed it with some comet followed by dish soap. Not slimy at all now.

[#1 model citizen]

On 10/16/2020 at 11:18 PM, Greg Wann said:

It seems bleachwhite is popular but I'm  not sure why purple cleaner won't do the job.  It is a strong degreaser.  I use Zep brand from Home Depot to remove chrome from parts.

 

On 10/17/2020 at 4:21 PM, yellowsportwagon said:

I’m familiar with resins. Purple cleaners screw them up I just am not familiar with Modelhaus products. Is there a preferred method for their stuff is my question.

Modelhaus has always recommended Bleechwite, however I asked them about Super Clean, that they also recommend. They said it will work but would turn the resin purple. They also recommended Marine Clean, a Por 15 product now labeled Por 15 Cleaner/Degreaser.

Since you apparently had issues with the purple cleaners, I would try to avoid them or test a scrap piece before immersing the whole kit in the "purple pond".

Edited October 20, 2020 by #1 model citizen

[keyser]

You can soak MH and Hiro, others in Blechwite. I’ve wiped down with Purple and Simple Green but I’ve heard too many stories about resin turning to rubbery messes to soak. Purple power can make some older plastic kits brittle as well. Happened to me on a few things I forgot were soaking. 
Hope Don and Carol healthy and happy. 

[Greg Wann]

I had not thought about discoloration since I have not actually tried it.  I suppose it is ironic that I know how to make nice resin parts but dont know squat about prepping them for painting.  I do have some mold release that is paintable and food grade.  If casters would use that then all the worries would not exist for prepping parts to paint and build.

Edited October 20, 2020 by Greg Wann

[yellowsportwagon]

I recently got this and do not want to risk ruining it for any reason!!

[Jack L]

I have soaked a older ( dark tan )  Modelhaus hood that had lacquer auto paint on it in the purple pond for 3-4 weeks with no problem .

[yellowsportwagon]

Yeah no thanks to the purple pond and resin. Not worth the risk at all. I used bletche white followed by comet and finally dawn. Squeaky clean no damage!!

[Greg Wann]

https://www.emicorp.com/item/ME+514E/A514-Zip-Paintable-Food-Grade-Mold-Release/

I'm not certain why as resin casters of model car parts that need gluing, painting and plating why we don't use a product like this.  This product seems to be a good match for what we do.  The biggest hurdle of the process is making a two part mold.  The release is really important to make certain the two  different pours (top half and bottom half don't bond together and become one mold trapping the parts inside.  Having to do surgery with a exact knife to hopefully cut the mold  up with enough care as to not ruin a rare part.

[Greg Wann]

OK, I called this company and the wonderful lady there is sending me free sample cans of this and a EMI brand A479.  Both are are non silicone and food grade rated as well.  I should get them next week and I will do some product testing.

[espo]

20 hours ago, yellowsportwagon said:

I recently got this and do not want to risk ruining it for any reason!!

I have used many of the suggested ways to clean resin bodies and parts in the past with only a few problems and one very big disaster that turned the body to mush. What I have started using is just plain old Dawn dish soap. I fill a container with enough water and Dawn to to cover the body and let it soak over night. Then rinse with cool water and let dry. This seems to clean the resin parts completely with no damage.  This Riviera looks interesting, where did you get this ??

[yellowsportwagon]

3 hours ago, espo said:

I have used many of the suggested ways to clean resin bodies and parts in the past with only a few problems and one very big disaster that turned the body to mush. What I have started using is just plain old Dawn dish soap. I fill a container with enough water and Dawn to to cover the body and let it soak over night. Then rinse with cool water and let dry. This seems to clean the resin parts completely with no damage.  This Riviera looks interesting, where did you get this ??

Ebay it’s a Modelhaus. Got it second hand. It’s sweet.

[High octane]

I believe the resin prep instructions are listed in the beginning of a Modelhaus catalog.

[#1 model citizen]

3 hours ago, High octane said:

I believe the resin prep instructions are listed in the beginning of a Modelhaus catalog.

You are correct, sir!

[BubbaBrown]

Its been awhile but Don recommended Marine Clean.  Probably too expensive for the most of you .

 

[av405]

This stuff?

https://www.amazon.com/POR-15-Cleaning-Degreaser-Surface-Solution/dp/B00KPXJVL6

Looks like it goes by POR-15 now.

[#1 model citizen]

4 hours ago, av405 said:

This stuff?

https://www.amazon.com/POR-15-Cleaning-Degreaser-Surface-Solution/dp/B00KPXJVL6

Looks like it goes by POR-15 now.

What I said!

6 hours ago, BubbaBrown said:

Its been awhile but Don recommended Marine Clean.  Probably too expensive for the most of you .

 

It is concentrated so a little goes a long way.

 

[dimaxion]

Just my 2 cents here . My go to is Westley's Bleach White . Ivory Soap (99.9% Pure - No *Lanolin to soften hands)   . *This is the niggler that will cause Fish Eyes .  I use Ivory on Plastic Kits before any Process in my Builds .  Thanx .. 

[#1 model citizen]

On 11/15/2020 at 2:28 AM, dimaxion said:

Just my 2 cents here . My go to is Westley's Bleach White . Ivory Soap (99.9% Pure - No *Lanolin to soften hands)   . *This is the niggler that will cause Fish Eyes .  I use Ivory on Plastic Kits before any Process in my Builds .  Thanx .. 

I have only used Bleach White on resin, however I recently purchased the Por 15 for 1:1 project & may give it try as I have plenty left over. Dawn dishwashing liquid (or the Walmart equivalent) is my go to. The blue stuff. Don't use the the stuff with hand softening conditioners, just pure soap. I wash all opaque & unplated parts before I start any sanding or clean up & then again before I prime.