Kreg ACS Guide Rail Square Adapter - DIY Kit
SKU: 84653981880

Kreg ACS Guide Rail Square Adapter - DIY Kit

Sale price$40.50 Regular price$45.00
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Description

Kreg ACS Guide Rail Square Adapter - DIY KitRafter Square not included! To use this kit you will need to purchase a 12" Empire Rafter Square (Model #3990 or Model #E3992) This will not work with the Kreg Accu Cut! Kreg Guide Rail Square Kit (for Adaptive Cutting System) Feature Overview We worked with engineer Jeff Wagner to bring his rail square idea to market. The goal of this rail square adapter was to be an affordable option that will still produce accurate 90 45 degree alignment. This is

Rafter Square not included! To use this kit you will need to purchase a 12" Empire Rafter Square (Model #3990 or Model #E3992)


This will not work with the Kreg Accu-Cut!

Kreg Guide Rail Square Kit (for Adaptive Cutting System)


Feature Overview

We worked with engineer Jeff Wagner to bring his rail square idea to market. The goal of this rail square adapter was to be an affordable option that will still produce accurate 90/45 degree alignment.

This is designed to work with Kreg ACS Guide Rails.

Our guide rail square uses the accuracy of the 90/45 degree sides on the aluminum rafter squares to achieve a true 90 and 45 degree angle. We are able to keep the costs down by using a 3D printed cam lock mechanism to secure the square against the rail. There are a total of 4 cam locks, 2 on each side so that you can use the square on either side of the guide rail.

  • The guide rail square creates accurate 90 and 45 degree alignment
  • The guide rail square can be used on either end of the guide rail
  • Strong cam locking system to ensure snug fit to rail
  • Optional Support Tab to keep the rail square flush to your workpiece

Accurate Alignment

Our guide rail square adapter uses the accuracy of an Empire square and the guide rail to achieve accurate 90 degree and 45 degree alignment. The kit installs onto an Empire square within a few minutes. It uses a cam lock system to press the Empire square to the guide rail t-track, achieving a true 90 degree.

90° and 45° Alignment

The guide rail square adapter can be flipped around and used on both sides. This means that you can set up a 90 degree cut or 45 degree on the close side of your workpiece. You can also install the guide rail square on the far side of the guide rail on the opposite side of the work piece.

Optional Support Tab

The Empire square is 12" long, which means towards the end there will be minimal sagging due to the weight. This is common on all guide rail squares. We provide an optional support tab which will let the guide rail square and guide rail sit flush onto the workpiece.

Technical Details

  • Weight: 6 oz (excluding rafter square)
  • Material: HTPLA plastic
  • Compatible Guide RailsKreg Adaptive Cutting System Guide Rails
  • Compatible Rafter Squares: Empire #3990 and Empire #E3992

What's Included?

  • (2) Installation Brackets
  • (4) Cam Locks
  • (2) Countersunk Screws
  • (2) Nylon Hex Lock Nuts

What's Included: Optional Support Tab?

  • (2) Installation Support Tab Brackets
  • (2) Support Tabs
  • (1) Countersunk Screws
  • (1) Nylon Hex Lock Nuts
    Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 84653981880

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    4.6 ★★★★★
    Based on 141 reviews
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    Verified Purchase
    Christine
    Massapequa, US
    ★★★★★ 5
    Color was great
    Color: Tan, Size: 9 Foot
    Perfect patio umbrella, price was fantastic.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on January 18, 2026
    A
    Amanda M. Miller
    Massapequa, US
    ★★★★★ 5
    Easy to use
    Color: Navy, Size: 10 Foot, Color: Navy, Size: 10 Foot
    Easy setup and easy use, cranks open very smoothly with no trouble. The fabric is opaque (not light filtering) and sturdy with edges sewn to last. This umbrella provides ample shade and sun protection. It works great and is pretty much as expected. I do find the tilt feature a tad tricky sometimes, maybe becsuse I’ve got smaller hands idk, but other than that it’s great.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 21, 2026
    W
    "WE WINN!!!"
    Dallas, US
    ★★★★★ 4
    Budget Baddie...
    Color: Tan, Size: 9 Foot
    This is a quality/durable self driven (me) beast of an umbrella replacement...It has good color and we chose the Tan 9ft. Easy usage for its weight class all while being budget friendly... atmospheric presence of richness & sturdiness, and very easy to open and close to adjust to this unit's comforts. I haven't put this umbrella out for the season as of yet... because the snow is still present on the grounds of New England! "WE WINN"
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on March 23, 2026
    S
    Shane H.
    Fort Morgan, US
    ★★★★★ 5
    Beautiful and works great.
    Color: Navy, Size: 10 Foot, Color: Navy, Size: 10 Foot
    I decided to try this because my old umbrella had seen better days and it was time to replace it. I am very pleased with the quality and the ease of assembly with this umbrella. It’s very sturdy and I like the quality of the fabric and the metal. It’s very easy to open and close and it makes my patio look great. It gives me the perfect amount of shade and the fabric thickness is perfect at keeping the harsh sunbeams from getting through. I also think the price is great for what you get. I would definitely recommend this umbrella because it’s made well and works well. It’s also very easy to clean. I just use my garden hose and spray it down and let it air dry. It also fit perfectly in the stand I already had and it works great. I am very happy I got to try this out.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on March 10, 2026
    E
    E. Van Der Scratchy
    Lexington, US
    ★★★★★ 5
    Great replacement patio table umbrella.
    Color: Tan, Size: 10 Foot
    After a windstorm destroyed my old umbrella on our patio set, I was looking for a new one that wouldn't break the bank but also held up to the direct sun of the summer months. This umbrella did not disappoint! The material part of the umbrella top seems like it is nice and thick and the stitching is overlapped in the corners which should provide a lot of strength for the windy days. I really like the neutral colors of the fabric, as that will go well with the rest of my outdoor furniture. The medal pole portion is perfectly straight and the pivot point connection seems nice and tight. I would think that this umbrella will stand the test of time. No assembly needed, just pull it out of the box and extend the fabric.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on February 26, 2026

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