Bubble Jig Video

Fred.Rowe

Fred.Rowe

Knifemaker / Craftsman / Service Provider
Joined
May 2, 2004
Messages
6,848
Here's a short video that shows the Bubble Jig being used.

I will be happy to answer any questions.

We are pretty much on schedule with production and should have some jigs in the mail by the end of the month.

For those of you on the contact list, I truly appreciate your patience.

Fred

http://blip.tv/play/AYGhuGkC

If you are interested in purchasing one of these jigs contact me @ mailto:fred.rowe@bethelridgeforge.com
 
Last edited:
Video came out good Fred, nice work. Shows how to use bubble jig very clearly. Need a better looking actor next time though:)
 
Burton said:
Video came out good Fred, nice work. Shows how to use bubble jig very clearly. Need a better looking actor next time though:)
Click to expand...

Funny, I thought the same thing.:)

Take care of yourself tomorrow and watch your back.

Fred
 
LF, when you said "video", I was expect a nice looking women in a bikini and not a Leatherface Ole Fart. HEHEHEHEHE!!!!
Nice job Bro.:cool::thumbup:
 
Nice looking tool!
What angle is your platen positioned at?
How would it would for a vertical platen position.
I had never thought about grinding sitting, looks better
for my old back
 
Tommegow said:
Nice looking tool!
What angle is your platen positioned at?
How would it would for a vertical platen position.
I had never thought about grinding sitting, looks better
for my old back
Click to expand...

The jig is made to work on any platen, from horizontal to vertical.

The one in the video is around 45degrees.

My old back insist on sitting to grind. The swivel chair in the pic has a ring around the bottom to rest your feet on. It is a very steady position to grind from and you don't get anywhere as tired as when you stand.
My wife says its the lazy streak in me:)

Best regards, Fred
 
indian george said:
LF, when you said "video", I was expect a nice looking women in a bikini and not a Leatherface Ole Fart. HEHEHEHEHE!!!!
Nice job Bro.:cool::thumbup:
Click to expand...

Hidden under that crusty old patina is an Antonio Banderas look alike. I just hadn't showered that day.:)

LF
 
Great video Fred! The production is terrific! It really shows how the fixture works and you did a great job at keeping the audience's attention.

Very well done!! Thanks for posting it. :thumbup:

-Rob
 
Great video but I do have one question. When you set the jig with the appropriate wedge, I think you said you are setting it to level.
So when you are grinidng you are trying to grind till the bubble becomes level again, or is that you are trying to do your grinding with the bubble in the level postion? :confused:
 
Dixieblade57 said:
Great video but I do have one question. When you set the jig with the appropriate wedge, I think you said you are setting it to level.
So when you are grinidng you are trying to grind till the bubble becomes level again, or is that you are trying to do your grinding with the bubble in the level postion? :confused:
Click to expand...

You are grinding with the bubble in the level position.

When you "center" the bubble, using the desired degree wedge and then place the Bubble Jig on your blade blank, you "center" the bubble as your steel contacts the moving belt.

As I stated in the video; I begin by setting the bubble, using the 5degree wedge. I grind, using this setting until I have the edge developed.
I might then choose the 4 or 3.5 degree wedge, depending on the blade I am grinding.

Three or three and a half degrees is about as flat as you can grind a knife blade that is 3/4" wide.
If you are grinding a wide bowie or camp knife you can go down to 2.5 degrees; angle of approach.
The bottom line is, you will end up with a "flat" bevel on both sides of the blade that are equal and centered relative to the ricasso.

Hope this information is useful to you.

Please ask, if you want more information.

Fred
 
I think you have your priorities straight:)

Give me a holler when you have that grinder in place and I will be happy to fill the order.

Fred

strahd71 said:
very cool Fred!

i need one of those but first i need a grinder!

jake
Click to expand...
 
DrThunder88 said:
Does the bubble remain centered as you articulates the blade around the belly?
Click to expand...

I stop using the jig at the point where I have ground the bevels flat from edge to just below the spine; or wherever you are stopping the grind line. Once the bevel is established, you no longer need the bubble as a guide. At this point you can lay the flat on the belt and complete the grind.
What I want to accomplish with the jig is just to get the bevels flat and make both sides of the blade identical and centered on the knife, I hope that makes sense.



The multiple radii at the belly and tip of the blade I do freehand.
There is no need for the jig at this point, the flats are flat and the grind is centered.
It makes the work that you do on the belly and tip a lot easier because you have a flat reference.

Good question, by the way.

Fred
 
You must log in or register to reply here.
Back
Top