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| Photo by Keith Yockey |
Remove one side of your jumps,
and place them where you will have
48" between the sides. Great for training
dogs to pass.
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Where does one obtain a 3" drill bit and what does it cost?
Janyne 
Russ Peterman replies:
What you're looking for is a hole saw. They are used mostly for drilling the holes in doors for installing knobs and locks. They come in varying sizes and can be found in hardware stores and home centers like Home Depot and Lowes.
c'ya
The Petermans
Russ, Rita, Shadow, Romper, & Pistol
Charlotte, NC
Keith Yockey replies:
You need to get a 3" hole saw, or a hole cutter, available at Home Depot. The cheap way to do it is draw a 3" circle, and drill holes on the inside of the circle with a 1/4" drill bit. Smooth the rough edges using a wood rasp.
Later,
Keith
Ian Hogg replies:
I'd try a hardware store first. They probably aren't your normal drill bit. I know someone who has one where it cuts a circle (like in cartoons where the floor is cut out from someone) rather than drilling a hole: It looks something like this:
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V V
There are other kinds that are cylindrical shaped but I don't know if they are used for wood or drywall.
Ian
Al Champlain writes:
The 3" hole cutter can get pricey. I would find someone with a router and go the template route. If you need info on making a template, email me and I we try and explain how to do it. I also use the router and template for the hurdle upright groove and the base board groove. If you buy my plans, I reveal all.
You can buy a 3" hole cutter, they are like a hacksaw blade in a circle. Or if you are real clever and you have a router, you can make a template for the router and cut the holes. If you use the router, only cut about 1/8 - 3/16 deep at a time.
There are also, hole cutters that are adjustable but these are better used if you have a drill press. Safety first...
Later
al the hurdle builder
Keith Yockey states:
> There are also, hole cutters that are adjustable but these are
> better used if you have a drill press.
This is my favorite method of cutting large holes.
> > Safety first... < <
Who could say it better? Thanks, Al.
If you have steady hands and can follow the lines drawn in the wood, slots can be cut with a Skil Saw. Just follow the basic safety rules of cutting in this manner.
Later,
Keith
Jim Sova writes:
Another Option is a hole saw. A device used to drill holes in doors for the doorknobs. Uses a drill and a drill bit as a pilot guide.
Jim
John Cocking writes:
I'd try a hardware store first. They probably aren't your normal drill bit. I know someone who has one where it cuts a circle (like in cartoons where the floor is cut out from someone) rather than drilling a It may depend on your design and carpentry skills, but I have always cut the hole with a jig saw. I find you have to do a bit trimming and shaping to get the hole aligned just right.
------^--------^--------^--------^-------------/]_
John Cocking, Instant Replay Flyball Teams,
Caledonia, Ontario, Canada.
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In the middle of a mail thread, Al Champlain writes:
Subj: Holes, grooves and slots
Date: 96-11-22 11:19:51 EST
From: Al Champlain
> Hi List
> There are also, hole cutters that are adjustable but these are
> better used if you have a drill press.
> This is my favorite method of cutting large holes.
> > > Safety first...< <
> Who could say it better? Thanks, Al.
> If you have steady hands and can follow the lines drawn in the
wood,
> slots can be cut with a Skil Saw. Just follow the basic safety rules
> of cutting in this manner.
If I were to use a Circular Saw (not to mention brands) I would still make a jig/template that would keep my saw within the intended boundaries. Even a steady hand and that many slots and grooves the margin for error is high. The preferred method for accuracy would be jig/template and router, making 1/8 - 3/16 inch deep cuts with multiple passes of the router for each slot or groove. Everyone should have a router or be able to beg, borrow, or steal one to make the hurdles ;-) That's all I'm sharing today ;-)
Later
Al
Keith Yockey responds:
Oh ... to have a router... It's on the Christmas List to be Sure.
To make Jigs is important when doing production work, and Jumps fall into that catagory. Certainly a router is preferable, but guide jigs can be made for the circular saw.
Simply clamp 4 pieces of wood into a square. Place the saw inside the square and set the blade height to zero. Position the blade to one corner of the slot on the jump and position those outside two boards. Go to the opposite diagonal corner of the slot with the saw and position those outside two boards. Clamp the assembly and recheck the saw positions. Reset the blade on the saw to cut about 1/16 deep. Cut the wood to see if the slot will follow your layout properly. When all is set, nail the square jig together. On the underside of the jig, place location nails against the side of the jump, into the frame. Cut the slot and check your work. Loose fits are ok, sloppy ones are not. Remember; in any wood working, it is easier to take more off, than adding it back on.
Tight fits will cause a problem after you have painted them, so keep this in mind. Always keep a wood rasp handy, it beats doing woodwork trimming with a chain saw, anyday! (been there, done that.. ask my wife how I installed a stove in the kitchen!)
Later, Keith
Al Champlain writes back:
Measure twice, cut once! Sprig
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