How good is good enough for woodworking machine set up? Looking for a 45 degree Set Up Block

[bpatters69]

Hello All,

First time poster. I am more of a Woodworker but I need some advice on a 45 degree set up Angle Block. I need some suggestions on what to buy and how accurate the Angle Block should be. BTW, I call it a block but it may have a more formal name. Here is a picture:



Maybe Angle Plate is a better name? Here is a link to the the Angle Block above: http://www1.mscdirect.com/cgi/NNSRI...re=ItemDetail-_-ResultListing-_-SearchResults. Is this one good enough?

Anyway, I have a piece of granite that is designed to be very flat and I am going to use the Angle Block to calibrate a gauge that measures squareness (90 degrees) for my table saw and joiner fences. The gauge also performs a number of other functions but measuring fences will be the Angle Block's primary function. Here is the device that I will be calibrating with the Angle Block.



The device for my table saw is the red bar with the dial indicator (which I own) in the guys right hand. The Angle Block that I want to buy is in the guy's left hand.

Anyone have a recommendation on where I can get an Angle Gauge for this type of set up? The Angle Gauge needs to be 1/4" thick and I need both the 90 degree and 45 degree capability.

Thanks, Bill

 

[bpatters69]

If that is a TS aligner gage you should get their angle set. A bit pricey but they are made as a companion set for the TS Aligner. I have the Aligner and the angle blocks. Great product. Here is the link.

http://www.ts-aligner.com/accessories.htm

"Billy G" :biggrin:

Thanks... I Have seen them online. I was hoping to save a few bucks.

 

[metalmaster]

I use the same set of angle blocks in the picture at work.
even the cheaper imports will be more than enough for any woodworking project.


mike

 

[bpatters69]

I use the same set of angle blocks in the picture at work.
even the cheaper imports will be more than enough for any woodworking project.


mike

Yes. For woodowrking, the angle block pictured would be fine. My question is which block would be apropriate for calibrating my table saw or is that what you meant? Thanks

 

[Tony Wells]

ust what exactly is the guy in the picture trying to measure/verify?

 

[Tom Griffin]

Bill,

A good rule of thumb for gauges is that they should be 10 times as precise as what you need to measure with them. In other words, if you want to gauge an angle within 1º, your gauge needs to be good to 6 minutes of arc. Not sure what the "10" means in the spec sheet of the ones you pointed out, but if it's 10 minutes it should be good to measure to around 1º.

Tom

 

[bpatters69]

Bill,

A good rule of thumb for gauges is that they should be 10 times as precise as what you need to measure with them. In other words, if you want to gauge an angle within 1º, your gauge needs to be good to 6 minutes of arc. Not sure what the "10" means in the spec sheet of the ones you pointed out, but if it's 10 minutes it should be good to measure to around 1º.

Tom

Tom,

Thanks. That is what I needed to know.

Bill

 

[OlBadger]

I am basically a woodworker too, but with reasonably large projects in Oak (several conservatories, windows, porches, general architectural stuff) and much to the annoyance of my woodworking friends, I tend to apply metalworking tolerances to most of the work, my tools are set up at the start of each project and often a whole day is spent adjusting and shimming to get dial guage accuracy on saw blades and table fences, mortising tools etc. The result - everything fits to within a fraction of a mm on site and I have ni worries about cutting and finishing timber because I can rely on my tooling's accuracy. So good on you for wanting to set up your machines so well, I know many who would think you were mad to use such accurate guages, but not me. Well done.