|Jul 24, 2012, 12:48 AM|
What about bolting the mould to a frame afterwards? You would have to recess the bolt heads on side A. You could use angle iron. 50mmx50mmx4mm length = x. It could be bolted on so that it lies over the corner of the B sides.
|Jul 24, 2012, 03:44 AM|
|Jul 28, 2012, 06:29 AM|
It's raining again!
I've run out of resin, and can't get anything locally!
Rather than wait a week,
I split the mould halves!
I'll do the final squaring off later as I think it'll be fine....
It split easily enough, but I had some negative draught on the vertical tail seam line.
The plug is rigid with no flex which caused the split edge to crack off.
It can be fixed!
|Jul 28, 2012, 11:03 AM|
Not surprised you ran out of resin. That is a BIG mould. Must weigh a ton.
We are going to have fun making sure that you don't get any surface bubbles. There are some pretty sharp curves in that tool. Ah, I forgot, you have been down that road before.
Impressive finish. But I am getting used to that in your work.
|Jul 28, 2012, 01:31 PM|
Why such a big mould? I was reading Samotage's Jart build again today and noticed that his mould was faaaar less chunky. Is the beef really necessary?
|Jul 28, 2012, 01:43 PM|
The mould could have been thinned out width wise to follow the fuz shape, (especially the nose area) but making the "box" would prove a lot more work and accuracy.
Sam was also not using the inflation system where you need "thickness" to counter 60psi internal pressure and the necessary even clamping.
I simply come to terms with the quantity of resin!
I'm learning too!
|Jul 28, 2012, 01:51 PM|
I've only used 45psi so far....
The mould Graham number's using for his DLG pod has worked great so far.
That learning curve is pretty steep in it's self as regards lay-up.
I'll get there soon....
Hopefully, I can learn from his experience!
|Jul 28, 2012, 11:41 PM|
wonder if anyone has tried to mix some "filler" to reduce the amount of resin reqd, like micro balloons, only bigger
Maybe dried wasabi green peas
|Jul 29, 2012, 12:32 AM|
|Jul 29, 2012, 02:03 AM|
We have a huge sand box just down the road!
been down there in the middle of the night in pouring rain!
cooked it up on the stove to dry it!
Strange but true!
If you mess around with epoxies,
and you not careful.....
You will be punished!
I mixed up 5g of gel coat to fix the minor chips and blemishes.
It's a 10: 1 ratio ie 0.5g hardner
My very sensitive scale sd it up!
It's still all sticky!
Now to clean it up....
|Category||Thread||Thread Starter||Forum||Replies||Last Post|
|Discussion||First Fun Fly of the year at Hartford Pa. 3/16, 3/17, 3/18. 2012||Curt S||Electric Flight Events||0||Mar 14, 2012 11:08 AM|
|Contest||2012 New Years Day Postal Contest||Mr B....||Sailplane Events||115||Jan 08, 2012 11:38 AM|
|Contest||2012 New Years Postal Contest||Mr B....||Thermal||1||Dec 27, 2011 09:03 PM|
|Discussion||2012 the year of the Hypothecation event bubble bursting making sub prime look small||treehog||Life, The Universe, and Politics||0||Dec 17, 2011 06:59 PM|