Re: RE: Sanding round prop spars

From: William Gowen <wdgowen_at_gmail.com>
Date: Mon, 21 Oct 2013 22:36:45 -0400

Very nice Tom!


On Mon, Oct 21, 2013 at 9:14 PM, Tom <tjsova_at_bex.net> wrote:

> **
>
>
>
> Vlad,
> To be able to sand matched round tapered prop spars requires a
> simple jig made from hard wood (maple, oak) . A 90 degree groove is routed
> in the hard wood block. The groove is tapered over the length of the block.
> For example the groove might taper from .085 Inches to .025 inches over
> approximately the 10 inch length of the block. A square piece of balsa is
> put in the groove and the top exposed edge is sanded. Rotate the square and
> sand again. Continue rotating and sanding until your spar is round and
> flush with the top of the groove. I have been using this method for years.
> With practice the spar will be within a few thousandths in both weight and
> diameter over the length of the taper. I have several blocks with different
> amounts of taper. I posted a couple of pictures in the photo section titled
> rounding prop spars.
>
> Tom
> Sent from my iPad
>
> On Oct 21, 2013, at 8:54 PM, Tom <tjsova_at_bex.net> wrote:
>
>
>
> Sent from my iPad
>
> Begin forwarded message:
>
> Dear all Thanks for tte replies. The anawers i seem to be getting is
> samding no taper spars i am interested in sanding f1d spars to taper and
> round. As for square they are not suited for boron reinforced spars
>
>
>
Received on Mon Oct 21 2013 - 19:36:46 CEST