NMRA 2018 Kansas City Convention - August 5-12, 2018 National Model Railroad Association

Introduction to Making Your Own Molds (Part B)

MWTM - “Introduction to Making your own molds”
A Two Part Clinic (part B)

Title: Introduction to Making your own molds
Cost: $65 Includes both Part A &B
Scale: N to O
Date: Tuesday, August 7, 2018 Time: 7pm to 10 pm

Lead Instructor: Clark Kooning, MMR, assisted by Peter Youngblood, MMR Jim Gore MMR and Howard Goodwin, MMR

This is a two-part clinic…you pay one fee of $65 but must attend Part A and Part B to complete this clinic.
Part A of this clinic is on Sunday, Aug 5,2018 Time: 6:30pm to 10:30pm

Introduction to Making your own molds …. Part 2 you will de mold your masters and be able to pour a great product which will turn into a hard plastic almost in front of you …and you will have reproductions in 5-10 min. We will talk about other mold ideas and materials as we go thru this very interesting clinic

Learn mold making techniques applicable to all scales using readily available commercial products. In Part1 of this 2-part clinic we will start by making a rubber mold. Whether you want to make one or a thousand reproductions of an original, you can do it using a mold. If your original model is made of plastic or almost any material, making a rubber mold makes it possible to reproduce that model – exactly. making simple masters out of styrene and a mold box which will hold your master and be the container to pour in our rubberized mold material. You will pour the molding material for our master and set it aside to dry for 24 hrs. If students have the extra time they can then make a second mold out of milk carton materials for a concrete support wall. . (This is a two (2) part clinic due to the need for drying time for the rubber mold material to set.) The first part of the clinic is Sunday, August 5, 6:30pm to 10 pm

Required Tools Participants Must Provide:
  • #11 X-acto knife
  • 12” Scale Metal Ruler (for your scale)
  • Small pointed tweezer
  • Fine-pointed pencil (mechanical pencil is best)
  • 2 Paint brushes (#3 and ½” flat)
  • Styrene Cement (preferably liquid
  • Emery Boards (the ones women use to file their nails)
  • Self-healing cutting mat 8 1/2” x 12” (or larger is fine)
  • ½” clear Scotch Tape
  • Right angle square
Please bring either a Bulk End Flat Car or a Flat Car in your scale to the clinic
(We will be making a load from the molds we make to go on your railroad cars)
Duplicuter made by Northwest Shortline would be a great asset in this clinic but not a must

Students need to bring their own tools in order to participate in these clinics

Bring any other tools you usually use or might find useful.
Optional tools: Optivisor, extra work light. These are handy tools which you could use in our clinics, but it is not essential that you buy them just for this week. It is your option!

A good way to carry all of these tools is to buy a small inexpensive plastic tackle box. These are usually available at department stores year-round.

Please note an updated tool list may be sent to you the week prior to the convention or on the Convention web site.
If not listed here, we will provide materials such as glues and paints.