kapex - tuning of 90 deg cut

[donwon]

So I am finally getting around to setting up of my Kapex after having it for some time .. yes little ones change things and timing  [smile]

I tried to use the online tool for angle calcs and it did not work .. tried on my ipad and PC.  So trying to remember my geometry, I used the following formula:

Opposite / Adjacent = tan, where the opposite would be the length of the piece cut and adjacent would be the left - right.  All of this would be / 4 (four cuts) and then inverse Tan to get the angle.

I cut three pieces and the results vary from .007 to .49 degs.  Before I adjust my saw, are these typical readings for the saw or are people getting closer numbers?  I have used a square to verify and the cut on other occasions seems to be out, but just by a hair which makes me believe it is out by no more than 1/2 deg.

Also, does the manual formula above seem right?

BTW, I love this saw  [big grin]  I just cut some 1" plastic sheets and on my other blue and red saw (Will protect the innocent  [tongue]) it would look like a plastic shaving factory had puked on me.  Only two pieces of specs of plastic on my sweatshirt .. awesome!

 

[donwon]

Just bumping this topic up  [unsure]

Does anyone have any advice on this ...  Shane ?  Seth ?  Anyone ? [scared]

 

[johnleve]

I made a video when I setup mine, not sure it will help you but here is the link

Post your measurements and I can plug them into the PDF and share the results with you.

 

[Carl Prentiss]

Nicely done John, but now you may have started another controversy.
Blaklader....Nope
Snicker.......Naw
Engelbert-Strauss..... UhUh
Jammies....You know it Baby!  I'm digging the style.    [poke]

 

[cliffp]

The way I did it was to get a rectangle of wood of approx max capacity (around 12") and make a cut with the wood to the left (waste on right), then flip it over so the same edge is bearing against the fence. The next cut is wood to the right and waste to the left. I remove around half an inch to an inch (not important at all). I then measure the width of this cut-off at both ends and halve the difference (as the error is doubled). The calculation is Tan(angle) = opposite/adjacent. The difference, as referred to previously is the opposite and the adjacent is the length of cut. So you divide the two numbers and take the Arc Tan (or Tan^-1) of the result. After a couple of adjustments to the mitre arm I was happy with the squareness visually and this equated to an error of 0.03 degrees.

 

[Rick Christopherson]

I tried to use the online tool for angle calcs and it did not work .. tried on my ipad and PC.  So trying to remember my geometry, I used the following formula:

Opposite / Adjacent = tan, where the opposite would be the length of the piece cut and adjacent would be the left - right.  All of this would be / 4 (four cuts) and then inverse Tan to get the angle.

The equation used by the manual is also shown in the manual. A screen capture is shown below.

For the most part your equation is correct, except you reversed opposite and adjacent. The result will just be the complimentary angle from your actual error angle. No big deal. At these very small angles, Sine and Tangent are nearly identical functions because the hypotenuse and adjacent sides are virtually the same.

[attachimg=1]

 

[johnleve]

Nicely done John, but now you may have started another controversy.
Blaklader....Nope
Snicker.......Naw
Engelbert-Strauss..... UhUh
Jammies....You know it Baby!  I'm digging the style.    [poke]

Thank you, they were a Christmas gift and are the softest, warmest, most comfortable pants in existence and I wear them more often than I probably should.  In all honesty I would not wear them if I was doing something more involved, you really should wear clothing with some structure for safety reasons but for this simple task I decided to go with comfort.  It is nice to reach that certain point in life were you can not care what you wear; when I go out for breakfast on Saturdays with the guys I would not be surprised if many other patrons had concerns about us possibly being homeless given our attire.

 

[mike_aa]

It is nice to reach that certain point in life were you can not care what you wear; when I go out for breakfast on Saturdays with the guys I would not be surprised if many other patrons had concerns about us possibly being homeless given our attire.

Could be a good thing.  Maybe someone will buy you breakfast or at least drop a few coins in your coffee cup!  LOL!

 

[Carl Prentiss]

Nicely done John, but now you may have started another controversy.
Blaklader....Nope
Snicker.......Naw
Engelbert-Strauss..... UhUh
Jammies....You know it Baby!  I'm digging the style.    [poke]

It is nice to reach that certain point in life were you can not care what you wear; when I go out for breakfast on Saturdays with the guys I would not be surprised if many other patrons had concerns about us possibly being homeless given our attire.

Agreed. I've been clipper cutting my own hair for close to 20 years. Anyways my apologies to you and the FOG for convoluting another perfectly good thread.