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Question About A Resin Casting Brand


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#1 Don B

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Posted 17 January 2008 - 01:21 PM

Hi everyone. Is there anybody out there who has used a resin made by Bare Metal Foil called Polytek Easyflo-60 polyurethane casting resin? If so, is it easy to work with as I am new to casting and want to buy a user friendly resin. Any help would be appreciated. Thanks, Don B

#2 Marc @ MPC Motorsports

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Posted 17 January 2008 - 02:25 PM

I've been casting my own resin parts for three years now. Everyone else who does will give their two cents worth, but I started with Micro-Mark's resin products and continue to use them today. Buy their starter kit as it comes with everything you need...rubber, resin, mold release, mixing supplies, clay.

Both the rubber and resin are 50:50 mix, which is much more forgiving and easier to blend for novices than the 10:1 others have. You need a scale to mix 10:1.

#3 resinslinger

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Posted 17 January 2008 - 04:30 PM

Don,

I seem to remember that Bare-Metal Foil had some casting products but I've never used them. As Marc said though, everyone has their TCW. Me, I use Alumilite products exclusively. The resins are 1:1 by weight or volume but most of the RTVs are 10:1, but nothing that can't be handled even by a beginner. Also as Marc said, you would need a good postal scale that measures in both pounds/ounce and kg/g. I got mine from Office Depot for about $30.00 (actually on my second one, first one was ruined by spilled resin). Also for those resin casters that are trying to find good mixing cups. If you go to SAMS CLUB or COSTCO you can pick up small condiment cups by the case (500 per case) for around $6.00 and clear cocktail cups (250 per package) for about $10.00. Great for mixing resin and small amounts of RTV.

Chris.

#4 Don B

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Posted 17 January 2008 - 05:38 PM

Thanks for your input. I went to BMF'S web site and got this info. Is the mixed viscosity of 60 cps good? :P



PHYSICAL PROPERTIES:

Mix ratio, by volume 1A to 1B

Hardness,Shore D 65

Pour time, 1 lb. Mix 2 ½ minutes

Demold time 15-30 minutes

Color, cured White

Mixed viscosity 60 cps.

#5 Marc @ MPC Motorsports

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Posted 17 January 2008 - 05:42 PM

Thanks for your input. I went to BMF'S web site and got this info. Is the mixed viscosity of 60 cps good? :P



PHYSICAL PROPERTIES:

Mix ratio, by volume 1A to 1B

Hardness,Shore D 65

Pour time, 1 lb. Mix 2 ½ minutes

Demold time 15-30 minutes

Color, cured White

Mixed viscosity 60 cps.


Especially for a beginner, I would look for a resin with a longer pot life. 2.5 minutes is not long to mix, pour and work with. The CR-600 I get from Micro-Mark has a 7 minute pot life.

#6 resinslinger

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Posted 17 January 2008 - 06:11 PM

A Shore Hardness of D65 is fairly stiff but not as stiff as I like it. I like resins with a D80 or higher

Pot life of 2-1/2 minutes is okay but you can extend the pot life by placing Part "B" in the fridge for about 5 hours. The chilled Part "B" will give you an extra 30 to 60 seconds of pot-life. BTW...pot-life begins the minute you mix the two parts and when they start to "kick-off".

Demold time is a bit too high for me.

White is fine color

A CPS of 60 is about right. Water has a CPS of 1 and Chocolate Syrup has a CPS of 25,000.

Now I can just see the questions about bubbles coming any time...right Marc?

#7 Marc @ MPC Motorsports

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Posted 17 January 2008 - 06:32 PM

Now I can just see the questions about bubbles coming any time...right Marc?

Probably so, but not until after one starts to cast resin and experiences them first hand.

But like resin products, there are ways to work with the bubbles.

Tiny Bubbles...could make a neat song title, huh Gregg?

#8 Don B

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Posted 17 January 2008 - 06:44 PM

Thanks again for taking time to help. I like the sound of the seven minute pot life.

More time to pop the bubbles.

o
o o o
o o :P

#9 resinslinger

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Posted 18 January 2008 - 01:04 AM

Or maybe the opening for a musical variety show.............***POP*** (too many resin fumes up the out snoot).......

#10 Smart-Resins

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Posted 19 January 2008 - 03:18 AM

Now I have been using the Alumilites resin, but have only about 30 seconds to mix and then sling it. The micro mark stuff I have been eying now. When I place my next order was thinking of trying the 7 minute one. Any pros/cons or tips and tricks to go with it?Thanks.

#11 rtcarey11

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Posted 19 January 2008 - 06:29 PM

Now I have been using the Alumilites resin, but have only about 30 seconds to mix and then sling it. The micro mark stuff I have been eying now. When I place my next order was thinking of trying the 7 minute one. Any pros/cons or tips and tricks to go with it?Thanks.


the micro mark resins are water thin so make sure your two part molds are tight. I haven't tried the 7 minute yet but I like the cr-300 and the cr-900 resins. The 1 to 1 rapid rtv mold rubber is really nice.


Ray Carey
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