That was really impressive.

great work

Excellent!

Amazing Work, Love the workmanship!

Great job Kelly! casting looks great. What do you use for the refractory coating? Do you get any surface defects? I have been using plaster of paris and get lots of little surface pin holes. Very turbulent pours etc. Trying to better my lost foam results. Great job again!

@kellycoffield533

4 жыл бұрын

I use a commercial coating called PolyCap 600 but thinned, non-setting, drywall joint compound will work nearly as well. If you spritz or dip your foam pattern with a little Dawn dishwashing soap diluted in water, the soap contains Propylene Glycol which is a surfactant, and it will make the coating wet the pattern better lessening the surface tension. A few drops of Dawn in the slurry also helps wetting, flow, and self leveling of the coating whether you are dipping or brushing. If you go to forums.thehomefoundry.org/index.php and the lost foam subforum, you will find more info in my posts about coating and reducing turbulence and lost foam casting in general. Thanks for looking. Kelly

@JH-bg6dn

4 жыл бұрын

Kelly Coffield Thanks for the info! i will check it out!

Sir Is there any advantage of dipping in watter after 15 mns.l lhave a big problem with strong ness of my casting & I don’t know about materials & I can’t buy the correct material in Sri lanka

@kellycoffield533

2 жыл бұрын

In this video, the hot casting is dipped to cool it and to remove the refractory coating. Best, Kelly