Martin Tärnrot

Techniques for Resin and Etch

Martin Tärnrot
Duration:   4  mins

Description

In this video, modeler Martin Tärnrot will paint, assemble, and weather a resin and etch model railroad kit. These kits require special attention for cleaning and priming. The model will be a Ford TT truck from the 1920s. The kit contains both resin modeled parts and etched based parts. He is using a kit from Artitech, a Netherlands brand from his local hobby store. The first step is to trim away the mold burr with an exacto blade. All modeled parts in resin have an invisible layer of release agent to remove the casting from the mold. However, this release agent will also prevent the paint from sticking. Luckily, this agent is easy to remove.

Martin uses a toothbrush with soap and water to wash both the resin and etched parts. He prefers to paint all the parts using a solvent-based foundation of black, brown, and turpentine, which sticks best to the resin surface. This mix must be thin to leave no paintbrush lines, so airbrushing the paint on is also a great option. With the primer in place, Martin moves onto painting with standard acrylic paints. He likes to paint details like the rims with a small brush and then moves onto airbrushing the black paint on. A piece of balsa wood and sticky rubber is a good anchor to keep the model in place to avoid messy fingers. He goes on to add paint on the flatbed of the truck, which would have been wood. Next he moves onto the etched parts of the kit. Watch the full video for more tips and tricks for assembly and weathering. For tips for modifying model railways scenery kits, visit the Model Railroad Academy archives.

Share tips, start a discussion or ask other students a question. If you have a question for the instructor, please click here.

Make a comment:
characters remaining

No Responses to “Techniques for Resin and Etch”

No Comments
Hello, welcome to a Model Railroad Academy video. In this video, we will paint, assemble, and weather a resin and etch-based kit. This type of kit and the materials in the kit require special attention for cleaning and priming, or the risk is that it ends in catastrophe. Been there, done that. Roll the video. We'll be modeling a Ford TT truck from the 1920s. The kit contains both from resin molded parts and etch-based parts. This kit is from Artitec from the Netherlands. I picked it up in my local hobby store here. The first thing we're gonna do is to trim away the mold burr. Now, molded parts in resin have an invisible layer of release agent all over. This is necessary in production in order to be able to remove the casting from the mold. However, this release agent will also efficiently prevent that the paint sticks onto the mold unless it's removed. The good news is that it's quite easy to remove. I'm just using a toothbrush, soap, and water. I then also carefully wash the etched parts. I prefer painting all of the parts using a solvent-based foundation, consisting from black, brown and balsam turpentine. I have tried a range of different acrylic primers, but most of them do not stick properly to this type of surface, and will come off, for instance, when you're peeling off the masking tape. That is a terrible setback, especially if you're building larger kits. It's though important to blend this primer so thin, so it leaves no mark of the paintbrush. It can of course also be applied using airbrush. Now, with this primer in place, we can securely start to paint the model using our standard acrylic paints. Being a model railroader often means that you only have matte colors, but no worries. You can always add gloss varnish on top. I typically paint the details using a paintbrush, like in this case, the rims, whilst the surface is painted using an airbrush. Here, I'm airbrushing the entire truck body using acrylic black paint, which I thin with airbrush thinner. A piece of balsa wood and sticky rubber is a good aid for these type of jobs. Most cars and trucks at this time, the 1920s or '30s, were black, both inside and outside. The flatbed, however, was made from wood. The etched parts are cut from the frame using a scalpel, bent to shape, and then glued in place using fast-set glue. Advanced painting techniques can be used on a kit like this to simulate corrosion, flaked paint, and frayed paint. This is typically what you will find in premium videos on the same topic. This truck was one of the later builds, and it came with a cab. Just like the paint, a whole range of weathering techniques can be used on a kit like this, but we're staying with putting some gray pastel chalk powder onto the tires. All right, I hope you liked this video about resin and etch-based kit. If you did, consider to get premium membership here on Model Railroad Academy and gain access to the premium videos, where you get more in-depth knowledge about the materials and methods necessary to take your creations to the next level. See you in there.
Get exclusive premium content! Sign up for a membership now!