RE: wooden drive pulleys [TANKS]

[Rick v100 <rickv100-at-yahoo.com>]

Steve, 

I prefer to use method 2 as I have concerns about the
side loading of the blade when cutting a circle. I
prefer to cut it to a close polygon and then round the
edges. 

I have a 12" Darra James table saw with a Systimatic
blade. The extra capacity comes in handy when cutting
stacked blanks for the nose of my tank. 

Another option is to cut the wheels out using a router
you could bevel the faces with a 45 degree bit and
then glue together to get the required V shape.

Rick 

--- Steve Tyng <STyng-at-acptrust.com> wrote:

> Rick wrote:
> 
> > Thanks for the tip. I have a tenoning jig that I
> have
> > built, it rides in the slot on my Beisenmeyer
> clone
> > saw fence. 
> 
> A Beisenmeyer fence clone.  It's good to see another
> avid WOODWORKER on
> the list!  ;-)
> 
> 
> > Are you turning the blanks on your circular saw
> also?
> 
> Yes I am.  I just cut and assembled the roadwheels
> for my Cromwell
> yesterday.  There's basically two ways to cut disks
> on a table saw.
> Method one involves incrementally raising the blade
> into the blank while
> slowly turning the blank.  I've started using a new
> method which I think
> is safer and produces less saw dust.  This method
> requires mounting a
> square blank onto a simple jig which it rotates on. 
> The jig is nothing
> more than a board with an axle sticking out of it
> that slides against
> the fence and holds the blank the correct distance
> from the blade.
> While holding the blank firmly, "just" cut a corner
> off the blank and
> back it off of the blade.  Rotate and cut the
> remaining three corners
> off.  Now you have eight corners that are cut off. 
> Now that you have a
> rough circle.  The blank (still mounted on your jig)
> is fed into the
> blade until it just engages.  You now rotate the
> blank 360 degrees.
> Advance the blank a little bit and repeat.  Repeat
> the sequence until
> you have a perfect circle.  I like this method
> because the blade is
> always stationary and a blade guard could be used if
> your into that sort
> of thing.
> 
> You can use a variation of method two to cut disks
> on a power mitersaw.
> The blank is mounted on a jig which it rotates on. 
> The jig can be a
> board with a nail sticking out of it that the blank
> rotates on.  Now
> just make a series of cuts with the mitersaw,
> rotating the blank a
> little bit between each cut.  This makes nice
> circles but not as
> perfectly round as on a table saw.  The cutting
> capacity of the mitersaw
> will limit the size if disk you can cut out.
> 
> I took a sequence of pictures while cutting a
> roadwheel and will be
> writing a little how-to article on cutting wheels on
> a tablesaw and
> mitersaw shortly.
> 
> 
>    Steve "Still Have All My Fingers" Tyng
> 
> 
> 
> Disclaimer:  The methods described above are
> considered advanced for
> tablesaw work.  PLEASE, if you don't feel
> comfortable with your tablesaw
> and don't want to take the time to build the proper
> jigs, do not try
> these methods.  They require close proximity of your
> fingers to the
> rotating blade.
> 
> 
> 
> 
> 



                
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