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« Reply #25 on: April 13, 2011, 11:18:43 AM »
avijit17basu
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Plaster of Paris is like 12-20 rs per kg and dental stone is much harder n just a bit more expensive. U ll get it at any place that sells dental instruments. Plaster is white n dental stone is green. IN belgaum ill get it easily next to the dental college n just find a first year dental student he'll tell u how to use it or chk out you tube.
I assume you are a dentist and have direct experience using these materials.
So you feel it is practical and cost effective to use these materials for aeromodelling. expecially to built some complex parts?
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« Reply #26 on: April 13, 2011, 11:32:13 AM »
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@ avijit17basu  : the cost os the same that he told me.... even got it confirmed.... i guess there is some prob in customs(LHS cost more or they don't stock)....  and there is no personal profit in the stated cost.....

I was not suggesting personal profit at all. maybe the material is thicker or something- you have seen it and you feel it is worth the price- so you are the best judge
regards,
Avijit
« Last Edit: April 13, 2011, 01:44:39 PM by anwar » Logged
 

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« Reply #27 on: April 13, 2011, 12:29:54 PM »
drrajdeepbrar
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I hav made parts for my car like shock caps.
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« Reply #28 on: April 13, 2011, 06:24:22 PM »
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@avijit17basu: did not mean that....... !! itz of industrial quality.....

@drrajdeepbrar : will surely try it out....!!! thanks
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« Reply #29 on: April 15, 2011, 11:37:09 PM »
drrajdeepbrar
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Well these materials are used to make denture material and yes some dental prosthesis are made of die cast material. N the procedure is almost the same. And its quite strong n not too expensive.
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« Reply #30 on: April 15, 2011, 11:40:15 PM »
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I need to know if this cloth is transparent n weather it can be painted n a sample photo of the cloth or u dont have it yet.
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« Reply #31 on: April 16, 2011, 12:48:39 PM »
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i have the photo and have some problem uploading it....
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« Reply #32 on: April 16, 2011, 04:29:43 PM »
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Is it transparent. Like can v paint over it n apply decal sheets
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« Reply #33 on: April 16, 2011, 07:59:36 PM »
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what i did was epoxy the FG to the plane blow some hot air(from a hot airgun or hair drier) press out the excess arilditde and leave it to dry.....  once dried u can see the wood.... sand it with a fine emery paper and its as smooth as u want it...!!!
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« Reply #34 on: April 16, 2011, 08:38:13 PM »
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Yes thats the best way to do it. But arildite is pretty expensive for this, it'll be great if you can find some alternate epoxy for glassing.
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« Reply #35 on: April 16, 2011, 10:47:58 PM »
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Photo pls.
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« Reply #36 on: April 20, 2011, 03:47:25 PM »
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here u go...............

1mm.jpg
Re: Source for FIBER GLASS CLOTH
* 1mm.jpg (44.56 KB, 640x480 - viewed 1890 times.)
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« Reply #37 on: April 20, 2011, 03:54:46 PM »
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The 2mm woven looks good to me Thumbs Up
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« Reply #38 on: April 20, 2011, 04:04:38 PM »
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i did not buy the 3mm an thicker coz it would be of no use....!!!!
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« Reply #39 on: April 20, 2011, 04:54:08 PM »
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Vishvesh,
did you check the weight per sq ft or sq mtr?
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« Reply #40 on: April 20, 2011, 04:57:16 PM »
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Isn't FG cloth meant to be handled with gloves on and with a very good mask when sanded? The glass dust is pretty bad if inhaled.
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« Reply #41 on: April 20, 2011, 05:08:11 PM »
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I thought that was only true for carbon fiber  Undecided
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« Reply #42 on: April 20, 2011, 05:20:29 PM »
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Check this - http://www.airfieldmodels.com/information_source/how_to_articles_for_model_builders/finishing_techniques/apply_fiberglass_finish/index.htm
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« Reply #43 on: April 20, 2011, 05:30:30 PM »
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Damn Bang Head I've have been playing with glass cloth lately Bang Head
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« Reply #44 on: April 20, 2011, 05:37:48 PM »
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What were you doing with glass cloth?  Head Scratching
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« Reply #45 on: April 20, 2011, 05:45:42 PM »
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I was trying to make a fuselage Violent
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« Reply #46 on: April 20, 2011, 08:38:24 PM »
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i was dealing with glass cloth............. doesn't make much of a difference if u have epoxyed over the cloth............ ya it is dangerous if used improperly but in most cases its safe....... if u don't inhale it purposely  Salute Salute
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« Reply #47 on: April 20, 2011, 08:45:20 PM »
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@pankaj: i have checked the weight as well will do it and post if tomo......!!!!
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« Reply #48 on: April 20, 2011, 11:51:11 PM »
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Well I donít have much experience with fiberglass, but recently I completed a fiberglass boat. If you take the example of cement concrete, fiberglass plays the role of steel rod and resin as the cement. Fiberglass comes with different type (Tissue, matt & cloth). Preparing the resin is the tricky part. You have to mix 20~30% Accelerator(blue colour) in one liter resin, mix it well and then  hardener (colourless). Ask the seller for a correct mixture.  A direct mixture of both these solution ( Hardener + accl.) may create fire hazards, just keep them apart. If you want to make a mold from a master piece ( it can be balsa parts / Plaster of Paris/ plastic anything), you need Wax / PVA as the releasing agent.  
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« Reply #49 on: April 21, 2011, 10:48:37 AM »
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we use Araldite LY5052 and Ardur 5052 low viscosity epoxy ! its very rare in India and need some experience to deal with, we use different propotion's for diifferent applications and material!
and again its very costly because its aerospace standard ! there is saying in composites world "without making your hand dirty, you can't make composite part"
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