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Old 01-29-2010, 10:14 PM
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james mcgrew james mcgrew is offline
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Default concrete molds

i am doing some molds for a concrete accent to be done on the exterior of a really special house, this is using the subtract method of model in aspire, the ballister is an extera prototype for 250 we will do for the house as well.

also a few shots of the lakeshore house

jim
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Old 01-30-2010, 06:40 AM
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Nice stuff Jim, You're getting better.
Michael
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Old 01-30-2010, 11:17 AM
Bob Savage Bob Savage is offline
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Man, that's a lot of booze!

Very cool subtract method technique. What's the mold made from, MDF? One time use?
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Old 01-30-2010, 11:32 AM
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they will seal the mold and make 30 or so

yea, and i quit drinking when i sold my last bar in 93' go figure!

jim
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Old 01-30-2010, 02:08 PM
Bob Savage Bob Savage is offline
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Quote:
Originally Posted by james mcgrew View Post
they will seal the mold and make 30 or so
It's humorous how after hearing an answer, it's so obvious.

That said, I've vowed off MDF. I think it hates me.
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Old 01-30-2010, 02:12 PM
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mdf is your friend, kinda like one that wants money all the time, ya just gotta learn how to use it/them correctly

jim

http://www.youtube.com/watch?v=tCrEJ...layer_embedded
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The principle of Measure twice cut once has not been replaced by a CNC

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Camera 1 ATC Closeup !
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Old 01-30-2010, 02:45 PM
Bob Savage Bob Savage is offline
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Quote:
Originally Posted by james mcgrew View Post
mdf is your friend, kinda like one that wants money all the time, ya just gotta learn how to use it/them correctly

jim

http://www.youtube.com/watch?v=tCrEJ...layer_embedded
I love how it cuts, but the dust seems to make me sick.
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Old 01-30-2010, 03:05 PM
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all dust makes us sick, you will get used to it but a respirator goes a log way, if you look you will see the pedastal fans in the background we try to blow off what the dust collectors do not pick up, in the video the dust foot is removed as we are showing the process to a reporter, use a dc and make a dust air filter with a squirell cage fan, this can be placed under a table or hang in the air, i prefer lower as dust falls. we also have a sanding table made with one.

the mdf is not as physically bad for you as one would imagine ( no cancer) but after seeing your pristine garage i can understand!! my shop also is 22000 square open feet with six bay doors when open an 22' cielings with 14' eaves so we have air flow
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The principle of Measure twice cut once has not been replaced by a CNC

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Camera 1 ATC Closeup !
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  #9  
Old 01-30-2010, 05:02 PM
Bob Savage Bob Savage is offline
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Quote:
Originally Posted by james mcgrew View Post
all dust makes us sick, you will get used to it but a respirator goes a log way, if you look you will see the pedastal fans in the background we try to blow off what the dust collectors do not pick up, in the video the dust foot is removed as we are showing the process to a reporter, use a dc and make a dust air filter with a squirell cage fan, this can be placed under a table or hang in the air, i prefer lower as dust falls. we also have a sanding table made with one.

the mdf is not as physically bad for you as one would imagine ( no cancer) but after seeing your pristine garage i can understand!! my shop also is 22000 square open feet with six bay doors when open an 22' cielings with 14' eaves so we have air flow
I think you've nailed it in the difference in room size and ventilation. I've got a nice sized cyclone as well as a stand-alone air filtration system that hangs from the ceiling, but to ensure minimal noise leakeat I for the most part ensured there were no air gaps to the outside since afterall, air gaps/leaks are where sound exits. The only exception are the two small vents (about 6"x12") near the floor which I have had towels stuffed into. In other words, I've got no ventilation!

Stupid, I know, but I was worried about the noise outside first. Now that I believe I'm good there, I have to whip the ventilation. With adequate ventilation I think I'll be able to do this CNC thing, and stay healthy.
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Old 01-31-2010, 06:29 PM
Robert Alexander Robert Alexander is offline
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Quote:
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With adequate ventilation I think I'll be able to do this CNC thing, and stay healthy.
Bob this is what I am looking at to put around my machine when I am doing mdf. I allready have a dust collector connected to the dust foot of my machine
but I want to get the fine particles that are getting away. So I am thinking of putting up some thick clear plastic sheets that are a couple of inches above the floor, and go up to the ceiling. The sheets of plastic will connected to T bolts that will slide horizontally on metal channels that are bolted to the ceiling. These panels will have magnetic strips on the vertical edges and can be pulled apart or slid out of the way to access the machine. I all ready have a shop filtration unit hooked up so I can connect it through the plastic.
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