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expiredphoinix | Staff posted Aug 17, 2024 12:10 AM
expiredphoinix | Staff posted Aug 17, 2024 12:10 AM

MicroJig Fitfinder 1/2 Gauge Center Finder

$22

$34

35% off
Amazon
22 Comments 26,988 Views
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Deal Details
Amazon has MicroJig Fitfinder 1/2 Gauge Center Finder on sale for $22.01. Shipping is free w/ Prime or on $35+ orders.

Acme Tools also has MicroJig Fitfinder 1/2 Gauge Center Finder on sale for $22.01Shipping is free on $199+ orders.

Thanks to Deal Hunter phoinix for sharing this deal.

Product Details:
  • 1/2 Thickness: The Fitfinder 1/2 Gauge allows you to find the 1/2 thickness of any material up to 3-inch thick
  • Create perfectly fitting joints with zero guesswork, set fences, and transfer cutting depths instantly all with no math or measuring
  • No Math or Measuring Required: The Fitfinder 1/2 Gauge automatically finds the center of your workpiece using simple geometry. Lock the measurement in place and set the cutting depth of your saw blade/router bit, or set fences
  • Set Precise Cutting Depths: Lock in the measurement and transfer to the router or table saw to set the cutting depth for flawless lap joints
  • Center Stock On The Lathe: Find the center of stock and mount material on the lathe for safer spindle turning

Editor's Notes

Written by citan359 | Staff
  • About this deal:
    • 4.7 out of 5 stars rating on Amazon based on 700+ customer reviews.
    • Our research indicates that this deal is $12.98 less (37% savings) than the next best available price from a reputable merchant with prices starting from $34.99 at the time of this posting.
  • About the store:
  • Additional Information:
    • Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.

Original Post

Written by phoinix | Staff
Product Info
Community Notes
About the Poster
Deal Details
Product Info
Community Notes
About the Poster
Amazon has MicroJig Fitfinder 1/2 Gauge Center Finder on sale for $22.01. Shipping is free w/ Prime or on $35+ orders.

Acme Tools also has MicroJig Fitfinder 1/2 Gauge Center Finder on sale for $22.01Shipping is free on $199+ orders.

Thanks to Deal Hunter phoinix for sharing this deal.

Product Details:
  • 1/2 Thickness: The Fitfinder 1/2 Gauge allows you to find the 1/2 thickness of any material up to 3-inch thick
  • Create perfectly fitting joints with zero guesswork, set fences, and transfer cutting depths instantly all with no math or measuring
  • No Math or Measuring Required: The Fitfinder 1/2 Gauge automatically finds the center of your workpiece using simple geometry. Lock the measurement in place and set the cutting depth of your saw blade/router bit, or set fences
  • Set Precise Cutting Depths: Lock in the measurement and transfer to the router or table saw to set the cutting depth for flawless lap joints
  • Center Stock On The Lathe: Find the center of stock and mount material on the lathe for safer spindle turning

Editor's Notes

Written by citan359 | Staff
  • About this deal:
    • 4.7 out of 5 stars rating on Amazon based on 700+ customer reviews.
    • Our research indicates that this deal is $12.98 less (37% savings) than the next best available price from a reputable merchant with prices starting from $34.99 at the time of this posting.
  • About the store:
  • Additional Information:
    • Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.

Original Post

Written by phoinix | Staff

Community Voting

Deal Score
+23
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Model: MICROJIG FITFINDER 1/2 Gauge | FN12

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Sort: Lowest to Highest | Last Updated 4/4/2026, 10:32 PM
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Top Comments

ryanscott6
268 Posts
193 Reputation
If you have a 3d printer, you can print a clone of it

https://www.printables.com/en/mod...alf-helper
DrSeuss
681 Posts
121 Reputation
Hah, yeah bro can you imagine all the suckers out there getting stuff done faster with this tool?! IDIOTS
Back4Less
808 Posts
258 Reputation
I swear some people think that if you're not making everything with winding sticks and a hand saw, you're not doing it right

22 Comments

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Aug 19, 2024 12:52 PM
607 Posts
Joined Feb 2006
eugefAug 19, 2024 12:52 PM
607 Posts
Quote from ryanscott6 :
If you have a 3d printer, you can print a clone of it

https://www.printables.com/en/mod...alf-helper
That was my idea as well. Cool idea for 3dp project
Aug 19, 2024 03:09 PM
74 Posts
Joined Nov 2012
trajanmcgillAug 19, 2024 03:09 PM
74 Posts
Quote from JMBauer74 :
It works, but it's not any quicker than doing measurements and intersecting your markings. You still have to use the tool to calculate two points. The only difference is you're spending $22 to do it with this. The selling point is, "it will do it for you", and maybe it will, but so will compasses, calipers, rulers, and so on. The math and geometric formulas don't change.. Additionally, this is limited to a thickness of 3 inches. IMO, big waste of money. If someone thinks they need it for $22, then their choice of course.
It isn't just about being quicker. It is also about being more accurate. Consider three workflows for trying to make multiple pieces match another:
1) Measure the first piece. Use the tape measure to mark the second piece, again to mark the third piece, and so on. Cut the second piece, third piece, and so on.
2) Use the first piece itself to mark every other piece. Cut the second piece, third piece, and so on.
3) Calibrate a jig off of the first piece and cut every other piece using that.

Of those, #3 will get the best results, #2 second-best, and #1 a distant third place. If you're using mathematical calculations, you're doing #1. This tool is something like workflow #2 but with a jig. You're more or less using a workpiece to mark itself. If the tool is accurate and has no give- which could be a big "if"- this will never be matched for accuracy or consistency by trying to take measurements and then separately mark on some multiple of those measurements. We'll see. I ordered one to try it. Maybe I'll find it's just a toy.
1
Aug 20, 2024 01:33 AM
7,776 Posts
Joined Sep 2016
JMBauer74Aug 20, 2024 01:33 AM
7,776 Posts
Quote from trajanmcgill :
It isn't just about being quicker. It is also about being more accurate. Consider three workflows for trying to make multiple pieces match another:
1) Measure the first piece. Use the tape measure to mark the second piece, again to mark the third piece, and so on. Cut the second piece, third piece, and so on.
2) Use the first piece itself to mark every other piece. Cut the second piece, third piece, and so on.
3) Calibrate a jig off of the first piece and cut every other piece using that.

Of those, #3 will get the best results, #2 second-best, and #1 a distant third place. If you're using mathematical calculations, you're doing #1. This tool is something like workflow #2 but with a jig. You're more or less using a workpiece to mark itself. If the tool is accurate and has no give- which could be a big "if"- this will never be matched for accuracy or consistency by trying to take measurements and then separately mark on some multiple of those measurements. We'll see. I ordered one to try it. Maybe I'll find it's just a toy.
You're turning simple measurements into something more complicated than necessary. Finding center on pretty much anything is no more complicated than knowing the right formulas and applying them correctly.

Assuming you went through high school. I'm sure you at least had some lessons things like, radius, circumference, diameter, mass, and center.

For beginners, most centers can simply be calculated with an X. If it's a square, make an X from the corners, center is where the two lines meet. You can use the same technique to find the center of a circle. Draw a line from any part of the circle. Draw the same line parallel to it so that it meets on the edges and is the same size. Connect the sidse vertically. All 4 lines should be equal and now you have a square within your circle.. Now draw an X just like you did with the square. and you will have the center of your circle with a square.

This stuff is so easy with, yet somehow you need a $22 piece of plastic junk to do it for you, and it will only measure up to 3 inches.

But hey, it's your money. Smilie
3
Aug 20, 2024 07:36 PM
357 Posts
Joined Dec 2013
tomritAug 20, 2024 07:36 PM
357 Posts
link dead. what was it?
1
Aug 21, 2024 01:47 PM
138 Posts
Joined Sep 2023
FeistyHalibut688Aug 21, 2024 01:47 PM
138 Posts
Quote from ultracheapmofo :
Quite expensive for all plastic parts
Back in my day plastic cost a nickel and nickels had pictures of Bumblebees on them. Gimme five bees for a quarter, you'd say.
Aug 23, 2024 03:19 PM
74 Posts
Joined Nov 2012
trajanmcgillAug 23, 2024 03:19 PM
74 Posts
Quote from JMBauer74 :
You're turning simple measurements into something more complicated than necessary. Finding center on pretty much anything is no more complicated than knowing the right formulas and applying them correctly.

Assuming you went through high school. I'm sure you at least had some lessons things like, radius, circumference, diameter, mass, and center.

For beginners, most centers can simply be calculated with an X. If it's a square, make an X from the corners, center is where the two lines meet. You can use the same technique to find the center of a circle. Draw a line from any part of the circle. Draw the same line parallel to it so that it meets on the edges and is the same size. Connect the sidse vertically. All 4 lines should be equal and now you have a square within your circle.. Now draw an X just like you did with the square. and you will have the center of your circle with a square.

This stuff is so easy with, yet somehow you need a $22 piece of plastic junk to do it for you, and it will only measure up to 3 inches.

But hey, it's your money.
It isn't about whether measuring is "easy". You make it out to be about whether someone can divide numbers in half or understand basic geometry. It's not. It's about precision, exact repeatability, and speed. It is easy for me to divide a thousand numbers and type the answers. But you know what is faster and will have zero typos or other mistakes? Writing one Excel formula to do the division and pasting that in the entire column of cells. Accountants write Excel formulas. Programmers build scripts. Woodworkers make jigs. Draw two pairs of perfectly parallel, exactly congruent lines at 90 degrees to one another on the end of a 1-inch dowel rod, then perfectly mark lines from each corner exactly? That is an inexact process every step of the way. Every step of a multi-step process adds both time and a slight bit of drift.

I absolutely love good solutions to things based on a smart application of math, and being able to solve something in the way you describe having no specialized tools is vital. But devices which mechanically apply that same geometry with perfect consistency to a repeated problem are welcome in any wood shop.
1
Aug 24, 2024 01:50 AM
7,776 Posts
Joined Sep 2016
JMBauer74Aug 24, 2024 01:50 AM
7,776 Posts
Quote from trajanmcgill :
It isn't about whether measuring is "easy". You make it out to be about whether someone can divide numbers in half or understand basic geometry. It's not. It's about precision, exact repeatability, and speed. It is easy for me to divide a thousand numbers and type the answers. But you know what is faster and will have zero typos or other mistakes? Writing one Excel formula to do the division and pasting that in the entire column of cells. Accountants write Excel formulas. Programmers build scripts. Woodworkers make jigs. Draw two pairs of perfectly parallel, exactly congruent lines at 90 degrees to one another on the end of a 1-inch dowel rod, then perfectly mark lines from each corner exactly? That is an inexact process every step of the way. Every step of a multi-step process adds both time and a slight bit of drift.

I absolutely love good solutions to things based on a smart application of math, and being able to solve something in the way you describe having no specialized tools is vital. But devices which mechanically apply that same geometry with perfect consistency to a repeated problem are welcome in any wood shop.
As far as bad arguments go, this is very bad. If you can't draw straight lines, then you're probably going to really struggle doing straight cuts.

If you understand basic geometry, you can always find center with really any straight edge, as long as you can draw parallel lines, because if you draw an X from corner to corresponding corner, they will always cross at center. That X, will have triangles, and by simply drawing lines through them, you can easily find the centrix of any of them, and this can be done infinitely within any of these objects (square, circle, triangle).

Anyway, hope your enjoy your $22 contraption. Seriously though, it wouldn't take you very long to learn the basic geometry and save yourself $20.
2

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