Tony
If you add aspoonfull of colloidal silica to the mix, I used it 6:1 by
volume with Expancell, you will get about 30% more expancell in to the
same resin. Start the mix in a large pot, then transfer onto a
board,(plasterers hawk) and work it hard with the scraper.
Try strimmer line 4 " tramlines and a stiff scraper. After you've done a
few of feet of wing go back and flatten the tram lines. The cabosil
makes the filler flow nicely too.
Graham
Tony Wickens wrote:
> <tonywickens@btconnect.com>
>
> Hi All
> I am filling at the moment, just to make all of you that have been
> through it envious! I have tried the fishing line method but found
> that second and third applications were necessary to deal with low areas.
> Getting the mixture dry enough (using expancel) I have also found
> difficult. I will try the system described in Jim and Heather
> Butcher's recent e-mail, particularly working it on a board with a
> spreader and the smear of resin should help the interface adhesion.
>
> Tony Wickens
> XS Kit 353
>
> Martin Tuck wrote>
>> The method is to use a pair of fishing lines (I think I used 100 lb
>> breaking strain but it was about 0.020" dia.). Use weights at either
>> end to drap them over the surface and space them about 10 inches
>> apart like a couple of tram lines. Slap on the filler (and if it
>> turns out shiny you need more filler in the mix) between the
>> tramlines and then using a wide spackle knife or straight edge run it
>> along the tram lines to spread the filler. You should end up with a
>> 0.020' thickness of filler. Lift up one line and place it 10 inches
>> from the other and continue the process all the way down the surface
>> being filled.
>>
>> Now when you lift up the lines you will be left with a line of no
>> filler when the fishing line was but a quick run over with the
>> spackle knife you can force just enough down to fill the gap.
>>
>> For sanding, I started with 60 grit and worked my way down to 100
>> then 160.
>>
>> Avoid adding more filler on top of previously cured filler as you
>> will make it difficult to get an even surface presumably because of
>> variations in hardness of the filler mix.
>>
>> Brings back happy memories! :-)
>>
>> Martin Tuck
>> Europa N152MT
>> Wichita, Kansas
>>
>>
>>
>>
>>
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