figure out the offset when it changes
Source: For more on FDMC Editor Will
would be more difficult than it’s
worth. The 3/8 is the one we’ve clearly
changed the most. We have a 3/16-inch
that we use for our qualified dado, and
that one gets changed out.
I don’t know if it was on the (CMA)
forum or just by somebody else on the
board, but I sent a picture of it, and it
was blue, of course. I asked, “How many
sheets should I get out of this?” “I don’t
know, 40; how many did you run?” “I
don’t know, 120 or something.”
Sampson: That was going to be my next
question: How do you determine when you
change out your bits? When they turn blue?
If it’s smoking?
Dehmer: I just look at the quality of
the cut. I think we get 60 sheets usually.
Because of our 5-1/2 horsepower spin-
dle, we do two passes with the 3/8 bit.
So, we’ll cut half of it, then we’ll go cut it
again, but I can run it at 850 inches per
minute with that 5-1/2 horsepower and
it’s not that much slower than running it
twice. I think it helps with parts moving,
because it’s not trying to cut through the
whole thing at once.
Sampson: Especially with the low
vacuum (17-horsepower vacuum system)
that you’re using.
Dehmer: It’s not low (laughter) It
works. I just figured I could buy another
one if I needed it. But I also had a power
problem still. With only 200 amps com-
ing in, going up was just like, well, that’s
where all the power is, in the vacuum.
Sampson: What is your advice for folks
taking this leap to CNC routers? What do
they need to do to make it more successful?
Dehmer: You can’t be ready enough
for it. You place the order, and it’s going
to take a while to get to you. Spend the
time learning how to make that machine
work, so when it does get there, you’ve
got a clue of what you’re doing. We were
way ahead of it, but I still spent time
reading about it and reading forums.
Sampson’s interview with Chris Dehmer, visit
Looking For the Cheapest
Possible CNC Router?
HOW ABOUT FREE?
Every CNC router, regardless of price,
has one thing in common. It must be
programmed. You will need a CNC
programmer. A typical CNC
programmer will cost you more each
month than the payment on a
Thermwood Cut Center, which does not
need CNC programs or CNC
programmers. So, if their machine was
free, it would still cost you more than a
Thermwood Cut Center, and in a few
years the Cut Center payments go away
and your programmer costs go up.
“I’ll just program it myself.”
Good luck! That thing needs a constant
stream of programs to run. Solving
problems, like damaged or scrapped
parts or defects in material means even
more CNC programs. Programming
custom cabinets on a CNC router is a full
time job….not to mention the cost and
effo effort for cabinet software...good thing
you have nothing else to do.
When you consider everything, that
cheap router isn’t so cheap after all. In
fact, to match a Thermwood Cut Center
they would have to pay YOU to use their
Instead t of looking for the cheapest
possible CNC Router, do yourself a
favor and talk to Thermwood about
how the Cut Center will save you time
and make you more money!
"Being able to go to the machine, pick out a cabinet or a piece of
furniture, plug in the size and start feeding material is huge"
- Donovan Mumma – GM – Byrne Custom Woodoworking – Lenexa, KS