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How to cut a perfect hole in wood using a hole saw by EAB



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we're drilling holes through two by ten

lumber using the two three-eighths m42

Razorback hole saw

now this little saw is capable of

drilling holes through steel metal

products as well as wood but for today's

purposes we're using what as a matter of

fact this particular one is tested at

140 holes through 3/16 plate steel very

tough very long-lasting to use the hole

saw there are really two parts we have

the hole saw itself which is doing the

cutting and we have the mandrel which is

required with a drill point to hold the

hole saw in place you'll notice that

this is a spring-loaded mandrel just by

pulling back we retract the drive pins

which will hold the mat in the hole saw

in place all we need to do is starch

spread it in and we pull back on the

drive pins slowly bring it round and the

drive pins will automatically drop into

the holes we're now set to go we have

assembled the hole saw into the mandrel

you simply take the entire unit slide it

into the truck Chuck our drill

taking the jerky and we're set to start

right while we're going to drill a hole

all the way through the idea the hole

saw is that it will give you a

relatively smooth time we start off with

a pilot drill which is going to start

the hole and guide us into the wood

material starting at night you'll notice

this rock motions to help move our

sawdust out of the hole you'll also

notice that by starting nice and slow we

have a fairly smooth nice clean finish

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but underneath where we have burst

through we have a little bit of chipping

around the edge so I'm going to show you

how to get away from that we take a

screwdriver pop it into one of the slots

and you can pull out the floor now if I

was working on a very nice piece of

furniture that I wanted I needed to have

a smooth hole on both sides we will then

start our process drill halfway through

until the pilot drill comes through the

other side and we will flip the work

over reinsert the pilot drill and start

our cut from the other side so we'll go

like this

what now come through the underside now

if I'm working in a cabinet obviously

I'm going to have to work this from

underneath but the purposes today will

simply cheat a little so you can now see

this is where the pilot hole came

through all we have to do is align our

pilot drill into this hole nice and

clean there we are so we now have a nice

smooth cut on both sides of the both

sides of the material keep in mind too

that when you're using a hole saw

you're generally inserting some sort of

a cover so normally there is a trick

plate or a cover goes over top of this

hole so that will even that will make it

even better but you'll notice when I was

talking about going slowly where I

turned it to full speed well here's what

has a tendency to happen remember I was

saying we go slow when you turn it to

full speed it often has a tendency to

burn not important but what it does is

overheat your hole saw which

shortens the life

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