Quote from: drrajdeepbrar on April 12, 2011, 06:09:51 PM
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?

Quote from: R/C vish on April 12, 2011, 01:45:40 PM
@ 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

I hav made parts for my car like shock caps.

@avijit17basu: did not mean that....... !! itz of industrial quality.....

@drrajdeepbrar : will surely try it out....!!! thanks

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.

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.

i have the photo and have some problem uploading it....

Is it transparent. Like can v paint over it n apply decal sheets

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...!!!

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.

Photo pls.

here u go...............

The 2mm woven looks good to me

i did not buy the 3mm an thicker coz it would be of no use....!!!!

Vishvesh,
did you check the weight per sq ft or sq mtr?

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.

I thought that was only true for carbon fiber 

Check this - http://www.airfieldmodels.com/information_source/how_to_articles_for_model_builders/finishing_techniques/apply_fiberglass_finish/index.htm

Damn I've have been playing with glass cloth lately

What were you doing with glass cloth? 

I was trying to make a fuselage

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 

@pankaj: i have checked the weight as well will do it and post if tomo......!!!!

Well I don't 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.  

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"