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Re: Splintering on cuts...


dolsid
 

Philip: Thank you for the tips. I will start working through them . I am
new at this so I have some a couple of "dumb" questions. How do you get a
gauge next to the arbor to measure its run out since the arbor is suspended
below the saw bed. The arbor on my machine has been modified to accommodate
a dado set so I am interested in checking that first. I was thinking of
setting the gauge on the table surface and measuring the distance to the saw
blade as I rotate it by hand but this would include the blade's plate
variations as well as the arbor's wobble. Also how to do measure the
blade's plate flatness?

----- Original Message -----
From: "Philip Tamarkin" <tamarkin@...>
To: <felder-woodworking@...>
Sent: Wednesday, March 29, 2000 6:32 PM
Subject: [felder-woodworking] Splintering on cuts...


I'm running an '88 BF-5 - has a scoring unit, but I haven't bothered using
it 'cause
I'm getting great cuts without splintering - NB: I'm not running melamine
or 2-sided
plastic laminate at all, thank God, and I'll use the scorer if I do! -
here are the
secrets I know.

1. Great blades make a difference - flatness of plate is most crucial -
check a # of
blades from the same manufacturor, and you'll find quite a bit of latitude
in the
plates. If you get something within a couple of thousandths of flat,
cherish it, and
use it for your finest cuts. I'm running Felder's 96 tooth "Silent
Power", which does
a good job of non-splintering, and a 96 tooth Tenryu (stock blade, made to
fit
Altendorf) that cuts perfectly-best I've ever used! At about $140 it's a
little less
expensive than the Felder. Don't mess with a thin kerf - some cut clean,
but mostly
the thin plate distorts when overheated, I'm sticking with only 3.2 mm
kerf - saves
resetting the fence every time I change a blade, too! Obviously,
razor-sharp (and with
sides of teeth jointed during sharpening) matters.

2. Check arbor run-out on the saw - best blade in the world will cut
badly if the
arbor's out - change bearings, if necessary, or have a machinist recut the
arbor face
accurately.

3. Zero-clearance throat plate will help a lot, but won't work w/your
machine. The
BF-5 blade sits several inches away from the slider, so I can make an
insert, but
haven't needed to.

4. Try to arrange that you're taking at least 1/2" or so off with every
cut. The
hairline cuts seem to want to splinter worse.

5. USING EXTREME CAUTION AND A BLADE GUARD make your cut with the blade
raised as high
as possible - this results in the tooth meeting the underside of the panel
as near to
parallel (no angle...) as possible, and will help minimize chip out.

6. High angle ATB blades (30 degree...) have worked well for me -
cove-faced tooth
configuration works well when sharp, but cut quality deteriorates rapidly,
and tend to
go from workably sharp to dead-dull without a moment's notice!

Scorers are their own set of problems - try these tips, and maybe you can
avoid!
-Philip Tamarkin
dolsid wrote:

Scott: I didn't have any experience with combination machines when I
bought
my 7-41 so I made some Rookie mistakes. Two features I am thinking of
looking into field modifications for are the electric drive for the
planer
bed which you mentioned and a scoring unit. Of the two I think the
scorning
unit is the best buy since I have not been to achieve the quality of
tear
out free cross-cutting on the Felder that I had with my own Woodworker
II
thin kerf blade I used on an old Delta in the cabinet shop where I
rented
shop time. I have used a new 10' thin kerf Woodworker II (the old one
was
replaced by Forrest when they found that their jig had gotten out of
adjust
for drilling the pin holes in the old one), a 12" Woodworker II and a
12"
Felder blade and a zero offset insert. None of these blades produce a
tear
out free cross-cut Although the tear out is very small. I think the
reason
for this is the position of the insert next to sliding table doesn't
allow
enough support even with a zero clearance insert. If some of the more
experienced members of this group have anything they think I am doing
wrong,
I would appreciate hearing from them. My work- around is to set the
splitter below the top of the blade when I need to make a scorning pass
before a cross-cut. With the planer you have to lower the bed enough to
allow the dust cover to flip over to the jointer position before
lowering
and locking the jointer beds in place. I usually mill several boards at
the
same time and after jointing I run all of them through the same planer
setting insuring constant thickness. If you have a work flow which
requires
going back and forth from the jointer to the planer, lowering the planer
bed
would get old fast. An option I would suggest to stay away from is for
using a dado set. I still don't have mine implemented and will have as
much
tied up in it as one of the above. ----- Original Message -----
From: "Scott Slater" <scott@...>
To: <felder-woodworking@...>
Sent: Wednesday, March 29, 2000 1:39 PM
Subject: [felder-woodworking] Electrical Controls on Thicknesser

HI,

I am interested in the electric raise and lower on the thickness
planer
(not the numeric panel - only the buttons). My machine will be built
in
Austria next week (finally), so I cannot add it at the factory, it
would have to be installed here.

Do any of the members here have that feature, and if so are you happy
with it - is it worth the $840 + install? Thanks - Scott

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