Revisiting paper airplanes - like we probably all started out with...

Good advice guys, I'll remember next time. I'm feeling a bit shell shocked at the moment, that's 3 for 3!

My version of a head-band camera mount.
Mine mounts over the right ear - otherwise the usage is the same as Q's.

 
 

It depends on how many degrees of di or poly - hedral you have. The greater the average angle, the less effective the ailerons become, other than as drag-brakes!

Since the plane was designed to be 'chuck' it will be self stable, I don't understand why you want to increase the stability, I would be tempted to remove the first 1degree of dihedral by cut and re-glue then put cf strip in the slot to re-inforce the new join. By doing this you could then have ailerons longer and closer inboard which may improve the roll rate.

The thing that drew my eye is that you have two stress points in the same location!
You have the printed dihedral block ends, and the plastic? wing mounting plate ends in exactly the same place.
I would suggest you make a new dihedral block that extends about 1cm beyond where the plastic plate ends- thus spreading the stress areas out instead of focusing them all in the same place.

I have used Aliexpress quite a lot, the delivery times are quite long but on only one occasion did I not receive an item, I complained and the supplier gave me a credit in their site. I'm not sure that I'll ever use it but the intent was good.
Good way to go Jon.

I used to use Bang good, but they seem to have been absorbed by Ali.
If you pick and choose carefully, their items are good quality and low-priced.
I often just browse, looking for ideas and inspiration, and find obscure gadgets in the electronics section that makes you wonder how they can sell them for such a low price - in the UK, you can't even buy the components, at the price they sell the complete and working module.
The solar powered watch I'm wearing now is from Ali and as near as I can tell, it's accurate to within a second a month.
You have to bear in mind that a lot of the stuff is made in Chinese 'sweat-shops' - but at the same time it is keeping people employed and fed - - where do you draw the line over what is fair?
Then - if you look deeper into the components the object is made up of, when you buy a UK brand - how many of the sub assemblies are made in PRC anyway? Apart from the 'One man and his dog' type of business, there is almost NO UK manufacturing left, it is all imported - or foreign owned.

Delivery time can be a few days, to a couple of months. It depends on how bulky, and when your placed order catches the shipping container - if yours is first in, it can be a while, but if yours was the last one crammed in beforethe doors shut - - - ! Small items are often sent by air anyway - so the biggest delay is in UK customs and excise - while they decide if it is worth trying to value the contents, then chase the purchaser for import duty - they usually don't bother for smaller charge-costs - it isn't worth the hassle!
I've said before about the radio adaptor plug I sent to the States for, costing about $2, and customs wanted £15 handling charge. I told them where to stick it, and later got one from Ali for £1 including p+p - duty-free.