Last month, Jim discussed doming basics, resin types and shop-safety tips. This month, hell focus on shop preparations, proper doming procedures and estimating job costs.
Controlling a finished products quality demands controlling your work environment. Companies that specialize in domed graphics, such as Falcon Enterprises (St. Petersburg, FL) or Sunwest Screen Graphics (Winnipeg, Manitoba, Canada), conduct their doming operations in a clean room with controlled temperature and humidity to keep their scrap rates down.
Interviews with production people at both companies produced some helpful tips. If youre interested in doming, consider the following advice.
When youre doming, your work surface and any drying racks must be level, or the resin will run to one side. To ensure its floors were perfectly level, Falcon Enterprises poured new floors before it moved into its new manufacturing plant. Im not suggesting you pour new floors. However, you should put a level on a worktable and make any necessary adjustments.
Also, keep your work environment air dry and warm. As the airs humidity increases, so do the doming liquids bubbles. During my first doming attempt, I primarily worried about humid conditions. Thus, I ran my air conditioner for a few days prior to using the doming resin. With dry air, I avoided bubble problems.
To control moisture, some shops use dehumidifiers. Throughout the year, Bill Barnes, VP of production for Falcon Enterprises, maintains a temperature of 70
Doming is the process of adding a glass-like, plastic-resin bubble to a 2-D surface to create an eye-catching, 3-D product. This image depicts Chemques (Rexdale, Ontario, Canada) mercury-free resin, which can be used to build flexible domes for any size sign. Photo credit: Chemque (Rexdale, Ontario, Canada).
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