Gotta love that fiberglass!
Can't fraise it any better, I do like to work with it.
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Posted 19 October 2009 - 10:38 PM
Gotta love that fiberglass!
Posted 19 October 2009 - 10:42 PM
Posted 02 November 2009 - 11:45 PM
Posted 03 November 2009 - 10:31 PM
Posted 10 November 2009 - 02:02 AM
Posted 10 November 2009 - 08:38 PM
Those molds look nice. Keep up the great work Bob.
Posted 13 November 2009 - 09:37 PM
Posted 15 November 2009 - 08:59 PM
Posted 16 November 2009 - 10:40 PM
Posted 18 November 2009 - 01:05 PM
Posted 18 November 2009 - 09:54 PM
I did not realize the core is balsa, I thought it was made out of pvc bricks linked with a net.
sometimes ago I tried to build the cowling mould using pvc bricks, but it's not as easy as one could think.
when you lay down the bricks on a curved surface they separate creating a lot of empty spaces to fill with micro.
putting the micro in the voids is not that easy: if the micro is too thick it doesn't fill the voids completely because it's not able to go down where the voids are narrow, if it's too fluid it drips somewhere else and at the end the voids are never 100% full.
on the other hand the quantity of micro used is very very big.
again, when you lay down the bricks on a curved surface some voids are created under the bricks also, as the fuselage curvature is smooth and the curvature created by the bricks is not, so you have to put a bed of micro before to put the bricks.
again the quantity of micro is very big.
another problem: the bricks want to be curved in one direction only, now I see that you used small pieces of bricks-net instead of just a big one and put it diagonally, is it the secret to do a good job?.
do you have any idea about the quantity of micro used for the whole fuselage?
and how long did it take to do the job?I guess really a lot....
but it has turned out as a great job!!
Posted 19 November 2009 - 07:24 PM
Posted 19 November 2009 - 10:40 PM
impressive numbers.....a huge work!
what kind of glass cloth did you use?
Posted 21 November 2009 - 08:21 AM
Posted 10 January 2010 - 11:13 AM
Posted 10 January 2010 - 07:50 PM
Will you be taking orders to sell the completed parts?
Posted 11 January 2010 - 11:27 AM
Posted 11 January 2010 - 08:51 PM
Nice. But I really worry about post-curing with balsa in there. 200 degrees Farenheit (110°C ?) is quite a lot. The Tg of MGS is somewhere up there, and you don't need to raise the post-curing themperature to or even above the glass transition temperature. Heating to 20°C (40F) below ultimate Tg for 5-8 hours or so is sufficient, there's no need to heat it up that much.
Are you going to try this out on one of the smaller molds first? I'd hate to see the bigger ones ruined since the balsa started to outgas or something.
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