not a tool for aging hippies with arthritis... A simple modification to
an ordinary woodworkers jointer that puts grooves in boards. Lots of
grooves. Lots of grooves fast! Lots of toenail gripping grooves!
Rough sawn poplar with 17 grooves.
Western red cedar with 17 grooves. Cedar 1 X 8's from the
'big box' building supply are quite expen$ive! Oddly, only
available rough on one side, planned smooth on the other. I need rough
on both sides which is a big part of what forced me to this phase of an
boondoggle. The rough sawn poplar, while considerably less expensive
cedar, is way too thick and will end up planned on at least one side as
Have not tried any oak yet, but based on this pine knot it
handle hard woods as well.
Now that we have seen what it can do lets see how to bork up a brand
new set of jointer knives.
Two for one deal! I can bork up grinder rocks too. Warning!
Due to the dangers
involved I do not suggest trying this with a modern high speed bench
grinder. Mine is old and slow and the belt should slip long
before it eats a second finger if I do something
First try on
grinding the knives. Since they would not cut deep enough
without hitting I went back and ground them slightly deeper and added a
radius on the edge that hit first. Also re-dressed the rock on the
bench grinder to try for sharper corners in the notches.
Partially succeeded... Also obvious why all the boards above have
exactly 17 grooves.
Zoomed view of same.
Knife installed in the cutter head and a view of the belt
slot to the
gravity tension motor. BTW, unlike normal jointing where the in feed
table is set lower that the out feed table by the intended depth of
cut, and the knife tips are virtually flush with the out feed
table. I have both sides of the
table flush and the cutter tips set above them by my intended depth of
Jointer on a shelf. Since it did not come with a stand I
mount it to a wall to save valuable floor space.
One more test, grooved PVC. Expanded PVC to be specific, the kind
that is like a stiff foam in the middle with a hard glossy layer on
both sides. A bit pricey, but slightly less so if you have connections
with a local supplier.
Chipped a bit as you can see, but this was mainly due to my sample
Thanks for reading! If your wondering just what the
heck this loon is
doing putting grooves in lumber (and now plastic) that looked perfectly
fine with out the
grooves. And you don't mind visiting a blatantly commercial website
where I hope to actually sell stuff <gasp> someday...
Then click right over to mysecondbathouse.com
and have a look around. The first mold
page documents building a rotational mold on a tight budget and is
likely to be the most interesting to metal workers or anyone
curious about roto molding.