Reply by jmos

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Posted on Specific question on LV Low Angle Jack

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840 posts in 2398 days

#1 posted 09-19-2012 02:43 PM

I have the LN LA jack and i love it, I’m sure the Veritas will be a great plane.

My first question for you is , how do you like your #4? If it’s good, you really don’t need the jack to do smoothing as you have a dedicated smoother. I would use the jack as a jack, and a jointer, since you don’t mention having a dedicated jointer.

The higher angle blades are really useful/needed for difficult grain, not particularly for the application (smoothing, jack, jointing).

In direct response to you post:

1) Yes, for shooting I would use a straight blade, as you stated, and 25deg should be fine.

2) Yes, you want to camber your jack blade, and use a relatively wide mouth to pass the larger shavings. I don’t find it takes very long at all cambering the blade using the Charlesworth method and water stones; yes a grinder could be quicker. I have a Jet wet sharpener and the cambering jig and I’m not sure that is really much faster, and it’s harder to control.

For jointing you use a less camberd blade (or rounded corners) and a tighter mouth, since you take lighter cuts.

For smoothing, you want a slight camber, or just rounded off corners, and a still tighter mouth (and lighter cut) to get a smoother cut.

You can use the 25deg blade for any application. Higher angles will work as well, but are harder to push and not required if you don’t need the higher angle for difficult figure.

3) As mentioned, the 50deg blade is good for difficult grain, and could be used as either a jack, or a jointer.

You might want to consider getting a few more blades for you #4 (or a few more planes ;-) ) set up with different angles. If you run into really nasty grain you’ll need a cabinet scraper.

Have fun with the new toy, I mean tool :-)

-- John

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