Ever wondered how to get nice fillets on your low wing fighter ? get some Bond paper from a stationers ( high quality writing paper no lines ) now get a piece of sorbo rubber,for this carpet underlay will do fine,now with a rolling pin roll over the paper against the sorbo rubber,you will find that by adjusting the pressure you can make beautiful cures,now make a tracing from your model of the root fillet shape,transfer this to the bond paper,run Uhu stick around the area you wish to apply the fillet,place pre-formed fillet in place,result a lovely shaped fillet that will also serve to butt your tissue covering onto.
To stiffen up the fillet prior to tissue covering surrounding area paint with thinned PVA glue.
To stiffen up the fillet prior to tissue covering surrounding area paint with thinned PVA glue.