which product for filleting

[melidman]

Hi there i have used 2 different methods of filleting and both are difficult to produce a neat finish.
 The 2 products i have used are FILLITE powder mixed with SP resin and piped out of a plastic bag.
The other was a Polyester Adhesive paste called freefix 6470 which had less sag but was still a mess which required a lot of elbow grease before glassing, both products came from East Coast Fibreglass.
 Which methods and products have you tried and were they successful?  

[Anders]

I use the wood dust that I have in my palm sander or the wood dust from my dust extraction in my guitar building workshop.
Remember that for filleting, what you use for mixing into the epoxy needs to have some fibres. This makes it stronger than a powder mix. So it´ll always be a little bit coarse.
In order to make it look more or less good, there´s noting like smoothening it out with a tea spoon when the mixture has set but before its to dry.

[Paul H (admin)]

I haven't used either product, but if it sags you did not add enough filler.  

Make sure you stir the mix for 1 minute, because it is thicker for the first 15 seconds which can deceive you. After thorough mixing you will find you can add more and more filler. Keep adding more until the peaks hold their shape.

Piping from a plastic bag is excellent and very quick, but work quickly as the epoxy might overheat in the bag.

cheers
Paul

[alopenboat]

On 8 Jan 2011 at 9:54, Anders [via UK HBBR Forum] wrote:

>
>
> I use the wood dust that I have in my palm sander or the wood dust
> from my dust extraction in my guitar building workshop. Remember that
> for filleting, what you use for mixing into the epoxy needs to have
> some fibres. This makes it stronger than a powder mix. So it´ll
> always be a little bit coarse. In order to make it look more or less
> good, there´s noting like smoothening it out with a tea spoon when
> the mixture has set but before its to dry.
>

If you are glassing over it try to arrange things so that the
glassing can be done while the fillet is still soft. This will allow
you to get an almost perfect fillet without any sanding at all.

--
Hoping for calm nights

Alastair Law,
Yeovil, England.
<http://www.little.jim.freeuk.com>

[melidman]

Thanks for the advice especially about the tip for glassing on top of tacky fillet to eliminate the need for sanding that should speed things along nicely.
Cheers