$27.99 Each
In stock
A fast, easy way to set the height of your bits and blades—just stack them up to create whatever dimension you need.

FastCap® Mag Shims

Item #
57446
Rating:
100% of 100

These magnetic shims can be stacked or ''split'' to create a handy setup block from 1/16'' to 1-1/8'' thick, in 1/16'' increments. Use them to set dado depths, router bit and drill bit heights, and distances from your router table fence to the bit. No more stooping down and squinting at a wobbly tape measure while you rotate a sharp blade with your fingers. Mag Shims sit firmly on the surface, and can be used as a solid block, or fanned open to create a staggered block when setting blade and bit heights.


Features:
  • Sticks to any ferrous surface for safe, convenient storage and easy access
  • High visibility—won't be accidentally swept up and tossed out
  • Also can be used as 1/8'' shims when spacing Euro style doors and drawers, and for common assembly operations
  • Use the corners of any Mag Shim to draw the following outside radiuses: 1/8", 1/4", 1/2" and 3/4", or a 1/4" inside radius
  • Shipping Restrictions: Ground Transportation Only to addresses within the continental United States.
(8) 1/8'' Magnetic Spacers
(2) 1/16'' Steel Spacers
More Information
Manufacturer Part Number MAG SHIM STANDARD
Weight 0.4000
5.0 / 5.0
22 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
22
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Very handy and easy to use
I bought these because it looked like a very straight forward design. They are easy to use and very quickly let me set up router depths and table saw dado heights.

I was using a micrometer before I bought these. I was getting good results, but this stack-able, adjustable tool is just a lot faster!!
June 6, 2019
Purchased
2 months ago
Woodworking Experience:
Advanced
1 1/8" is exact off-set on my circular saw from left side - huge timesaver
The DeWalt circular saw I use has exactly 1 1/8" offsent from left edge of shoe to tip of blade (the DeWalt included one). This thing has been a HUGE timesaver by enabling me to line this up against my cut-line so I can off-set a speed square to use as cutting fence for "field" cuts.

Haven't needed it for anything else yet, but between the shims themselves, and various exact measurements of various faces, it's a very handy and inexpensive tool to have.
June 5, 2019
Purchased
3 months ago
Woodworking Experience:
Intermediate
Super. Allows for height measurement AND therapy provides a top check. Best of all ... cost effective and one piece. Unite, however, that it does not do double duty like precision bars for tasks like spacing or leveling insert plates to a table.
February 20, 2019
Purchased
6 months ago
Woodworking Experience:
Intermediate
Easy router adjustment
Have used for both bit and fence settings. I find then easier to use than the bar type shims.
December 25, 2018
Purchased
8 months ago
Woodworking Experience:
Intermediate
Work's great!
July 10, 2018
Purchased
1 year ago
Woodworking Experience:
Intermediate
Shims Very handy
The Shims are very handy for router bit and saw blade setup.
July 10, 2018
Purchased
over 2 years ago
Woodworking Experience:
Intermediate
Very handy
Wasn't sure we'd use them much but the day they arrived, we found they very handy. Highly recommended.
March 26, 2018
Purchased
1 year ago
spacers
these spacers work just great stack well with the magnets and very easy to use very accurate
September 19, 2017
Purchased
1 year ago
Very nice.
Work well. Magnets are almost too strong at times.
August 18, 2017
Purchased
over 2 years ago
Woodworking Experience:
Advanced
You owe it to yourself to get one!
Only rarely give a 5-star review, but this is becoming, potentially, one of the most valuable tools in my tool bag. It lets you maintain accuracy in repetitive cuts, of all sorts, without fumbling about with tape measures, & c. With the price of lumber getting ever higher, this device will save headaches, frustration and beer money. All in all, not too expensive from the get go, as well. Beats fumbling around with those little brass spacers, too.
April 23, 2017
Purchased
over 2 years ago
Woodworking Experience:
Advanced
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Why did you choose this?
Rockler Store
Cabinet installer using for adjusting doors and drawers
Stuart F on Aug 21, 2019
Want a quicker way to set router and table saw heights and distances from fence.
Rick B on Mar 6, 2019
Cabinet installer using for adjusting doors and drawers
Stuart F on Aug 21, 2019
To make setups easier for numerous woodworking machines in my workshop.
J. I on May 20, 2019
Want a quicker way to set router and table saw heights and distances from fence.
Rick B on Mar 6, 2019
I wanted these to make measuring on my table saw easier and to use as shims for installing doors on my kitchen cabinets.
Mary Lou E on Feb 2, 2019
hubby's christmas list
Mary A on Dec 4, 2018
To help with gauging set up's on saws, routers and drill presses
Randall H on Aug 4, 2018
setup will be easier
Jeffry B on Jan 29, 2018
The older I get the harder it is to see the tape to measure height of saw or router blades. I was going to buy a set of brass spacers but this seems more useful
Robert M on Jan 1, 2018
they are a gift for a friend
thomas p s on Dec 16, 2017
Ease of use
David S on Jul 11, 2017
Magnetic feature and ability to separate and use for other applications like drawer gap spacing
William R on Nov 27, 2016
Not happy with homemade depth gauge
Joseph S on Nov 9, 2016
Ease of use
Stan P on Oct 28, 2016
Convenient, accurate measurement for tablesaw & router table.
Terrence D on Oct 2, 2016
this is helpful and speeds up my time in setting blade depth
Leonard L on Sep 28, 2016
Neat
Dack on Jul 31, 2016
Ease in set up
Larry M on Jul 11, 2016
Set up
Mark E on Jun 27, 2016
Looks like a useful tool
Larry W on Feb 24, 2016
useful for setup work in woodworking but I also use these for metalworking applications, especially for work in supporting overhanging pieces on the drill press
desperado on Feb 1, 2016
I was just curious about this and it quickly became one the most valuable tools I have. Paid for its self the first cabinet job I used them on. From setting router depths, drawer glide, door margins, anything that needs to be repeatable. With the magnets embedded they are also easy to keep track of. Haven't lost one yet.
Stephen D on Dec 13, 2015
Great for setting the blade height of saw blades
Charles E on Dec 10, 2015
more precise set up
Nicholas W on Nov 27, 2015
easier than using tape measure for adjusting blade depths
Jody k on Nov 7, 2015
Looks like it will be useful and others reviews were very positive.
Arnold K on Aug 25, 2015
Very neat and handy item invented by a local Shop Teacher. I use mine all the time.
Alvis W on Aug 10, 2015
Mark Petersen, Contributing Editor to "The Family Handyman" magazine, recommended them.
Douglas D on Aug 10, 2015
Seemed like a logical solution to setting depths and heights for various shop tools, as well as a standard to use for other measuring tasks.
Mike on Aug 6, 2015
FastCap has a great line of tools and accessories to make tasks easier
Henry D on Jul 31, 2015
Great for measuring, 1/8" each, 1/16" steel plates
Frank R on Jun 19, 2015
Ease of use
Thomas D on Jun 7, 2015
Saves time and ensures correct measurement
Anthony C on May 17, 2015
Great Product!
Lester I on Apr 28, 2015
This set of magnetic shims looks perfect for my needs and easily sticks to my table saw, router table, or drill press until needed.
Hobart E on Apr 9, 2015
To make setups easier for numerous woodworking machines in my workshop.
J. I on May 20, 2019
I wanted these to make measuring on my table saw easier and to use as shims for installing doors on my kitchen cabinets.
Mary Lou E on Feb 2, 2019
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