jonathan 4 Posted July 30, 2018 Report Share Posted July 30, 2018 ok if I wanted to build a carbon fibre sphere, say about 800mm diameter, lets say I had a mould (1/2 sphere....) how much would it cost to make each one in materials... doesnt have to take much load, for the inside of a custom globe.... question 2 , what would be best material for the mould??? Quote Link to post Share on other sites
KM... 829 Posted July 31, 2018 Report Share Posted July 31, 2018 200gr plain carbon work on $45 a sq metre. That should be reasonably good (safe) to work on. One layer won't have much grunt though. 800mm sphere is 2.1 sq mts in surface area. So say 3 layers means $290 odd of cloth plus resin, which will be bugger all. 3 layers being a guess obviously. The mold, if you want to reuse it use plain fibreglass. Maybe shape up a block of polystyrene and coat that to make the plug, lay a pile of fibreglass over that, pop it off and bingo your 1/2 sphere mold done. No back up that dingy a moment, what a dumbarse I can be at times. Depending where you are we have 800mm spheres we make buoys from. Wax up one of those and bingo, a mold ready to go for either a one off carbon item or a glass mold for many carbon items. If that excites you let me know. Sabre 1 Quote Link to post Share on other sites
Black Panther 659 Posted July 31, 2018 Report Share Posted July 31, 2018 Go to a toy store and buy a toy ball. Wrap it in glad wrap. Presto. A mould. Quote Link to post Share on other sites
SloopJohnB 154 Posted July 31, 2018 Report Share Posted July 31, 2018 What about making them from titanium? https://news.thomasnet.com/featured/lockheed-3d-prints-massive-titanium-domes-for-space?channel=newsletter&campaign_type=PNA&campaign_name=0718&utm_campaign=0718&utm_medium=newsletter&utm_source=PNA&tinid=221696449 Quote Link to post Share on other sites
lateral 110 Posted July 31, 2018 Report Share Posted July 31, 2018 Cool vid! Quote Link to post Share on other sites
smithy09 49 Posted August 2, 2018 Report Share Posted August 2, 2018 Very cool vid!! Quote Link to post Share on other sites
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.