CRB7 Combination Router Jig Mk3
The CRB7 Combination Router Base is no ordinary Router Jig. It's a versatile system that offers excellent control through a multitude of routing operations. The offset, cranked rod design, allows the CRB7 to quickly adjust and fit over 650 models of router. Micro adjustment makes positioning router bit easy with a precise degree of accuracy so you can use an undersized bit to creep up to your desired point incrementally, especially useful when mortising or cutting a dado. Performing 7 functions straight out of the box with an every growing number of accessories, the CRB7 Routing System is fast becoming one of our most popular tools.
1. Offset Baseplate
Increases overall router stability, reducing errors when edge molding by more than doubling the surface contact area between router and work piece. CRB7 also positions the pivot hand guiding the router toward the center of the panel, smoothing out the router pass action, reducing the chance of burn marks
2. Small Circle Compass
Route precision circles and holes that are actually smaller than the base of the router. Micro Adjust the circle dimension without disturbing the set up.
Min Radius / Diameter: ¾” 19mm) / 1.1/2” (38mm)
Max Radius / Diameter: 8.¾” (225mm) / 17.1/2” (450mm)
Measured using a ¼” (6mm) straight router cutter.
3. Anti Tilt Support
Another first, variable height triangulated stabilization. Usually most of the router base remains unsupported when edge routing. The CRB7 Anti Tilt Leg supports the router eliminating router tilt, especially important when routing work pieces with a high aspect ratio.
4. Adjustable Mortising
A unique feature that allows “Centred and Off Centred” mortises. Decide on and precisely control the actual dimensions of the mortise.
5. Large Circle Compass
Cut circles over 4ft in diameter. Super fast set-up means that the router doesn't even have to be taken from the CRB7. Maintains the same level of precision, adjustability and accuracy of cut that the CRB7 has always provided.
6. False Panel Rebate Copier
The CRB7 provides a simple and exceptionally quick way of accurately repeating a molded dado. Ideal for production batch quality faux or false panelling.
7. Adjustable Clamp Guide
Run the CRB7 up against your clamp guide to accurately route parallel dado’s along the length or width of your work piece. The Micro Adjuster reduces clamp guide set up time.
Fitting the CRB7 to your favourite router couldn’t be easier. The New Crank Plates and additional set of Guide Rods allow the CRB7 to be fitted to any router with "2 x through rod drillings and rod pinch bolt ". Select the correct sized Rods for your router and the Adjustable Crank Plates will adjust rod height and width simultaneously.
Unlike most router jigs, the CRB7 can be fitted/removed in no time. No fiddly screws or special fitting plates required.
New Locking Bars
Help to tighten and loosen the guide rods during initial “Set Up'' and Large Compass assembly.
Indexed Mircro Adjuster
Allows precise control over the router cutter position. Knurled and indexed for ease of use
2" Bakelight Ball Handle
Ergonomic design, comfortable to the touch, allows for easy hours of consecutive use.
A self-adhesive Imperial/Metric rule, another feature to ensure quick visual indication of the router cutter position.
Two-Part Anit Tilt Leg
Supports and stabilizes the router when edge routing. The two leg sections accommodate combinations of router position and work piece thickness.
Made in the United Kingdom. The CRB7 is manufactured to the highest standards. Including hard anodized, solid aluminium bridge, laser cut 3/16” (5mm) thick acrylic base plate and precision turned steel and brass components.
Two Year Guarantee
Our extended guarantee is testimony to the build quality of the CRB7 MK3 and ensures our customers can buy in confidence
Edge Molding a Worktop
Routing a Centered Mortise for a Table Leg
Making a 50" Circular Table Top
Creating Faux Panel Kitchen Doors
Routing a Speaker Box Hole
ROUTER MUST HAVE'S
Your router base must have drillings that allow the CRB7's guide rods to pass all the way through it.
Your router base must have at least 2x Wing Screws to lock onto the CRB7's guide rods.
Compatibility quick search.
Enter your router's brand name to search the list.
BRAND & MODEL
FITS CRB7 MK3
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FAQ, Hints & Tips
My router cutter does not sit centrally in the CRB's base plate letterbox - Is this a problem?
No It's not a problem - Providing the outer edge of the cutter clears the parameter of the base plate letterbox. It does not affect the performance of the CRB.
The rods of the CRB have a smaller diameter than the rods of my router - Will the CRB still work with my router?
The short answer is yes, the CRB MkIII includes 2 sets of rods with different diameters 2 x 9/32” (7mm) and 2 x 5/16” (8mm) This allows the CRB7 MkIII to fit a larger range of different makes and models of router. It is recommended to fit the largest rod diameters that the router base will allow. As the closer the fit between rod and router base rod drilling minimizes the router tracking or crabbing on the baseplate when using the micro adjuster.
There are also accessory rods available with larger diameters for routers with even larger base rod drillings These are available on the following link or please ask your stockist and M.Power would be more than happy to supply them through your favorite store.
2 x 24/64” (10mm) rods
2 x 15/32” (12mm) rods
It's important during set up to ensure that the CRB rods are set up precisely so that the bottom of the CRB rods rest exactly at the bottom the router base rod drillings. It's also important to use 2 x spanners when tightening and locking the Adjuster rod in position on the bridge. Using just a single spanner can rotate the rod and cranked plate assembly out of alignment.
I’m confused which CRB7 model have I got?
You can identify the models by checking the following details:
The MkI includes a shim kit to adjust the bridge height and also has black dia 5/16” (8mm) rods and no cranked plates.
The MkII has cranked plates fitted between the 2 x main rods and the bridge and no shim kit - The rods can be either dia 9/32” (7mm) or dia 5/16” (8mm).
The MkIII includes 2 sets of rods dia 9/32” (7mm) or dia 5/16” (8mm) and a Large Compass Kit.
I have a large router usually fitted to a router table. Will the CRB still work with it?
Yes it will, however due to the heavier weight of the router and in some cases much larger rods and rod drillings, There may be increased resistance when the router moves across the CRB baseplate when using the micro adjuster. Larger diameter rods improve this movement and reduce the chance of tracking.
Measure the rod drillings in the base of the router in order to ascertain which of the Larger accessory rods to order.
2 x 24/64” (10mm) rods
2 x 15/32” (12mm) rods
Why is the Micro Adjuster stiff to turn when my router is mounted on the CRB, but easy to turn when the router is taken off?
This can be caused when setting up the CRB to your router. It is very important to use 2 x spanners when tightening and locking the Adjuster rod in position. Using a single spanner can rotate the rod and cranked plate assembly out of alignment. Altering the rods position relative to the router-base rod drilling and setting up tension between router and CRB, which in-turn creates a stiff Micro Adjuster. Larger heavier routers will make the micro adjustment stiffer.
I’m finding the instruction manual quite difficult to follow. We’re sorry for any confusion caused by the complicated nature of the instruction manual. It is in part due to the number of functions and the numerous variations of set-up for the many different routers that the CRB fits. We have produced a Computer generated demonstration video which shows initial set up and goes through all the functions. Customers have said this has been helpful in their understanding of the tool.
Is the plastic protective coating/covering on the bottom of the router base meant to be peeled off before use?
Its only there for protection of the Baseplate during manufacture and assembly and is designed to be removed before use. Some people do leave it on as long as possible however its only temporary.
Can you tell me what router bit type would be recommended to use with the liptrim kit when finishing off glue on edging?
A straight flute with a diameter larger than the edge your gluing is good. Although I prefer a bowl bit as it reduces the chance of break out.
Free Extended Warrantyactivate
Contents & Spares
1 x CRB7, Set up with Pair 5/16” (8mm) guide Rods
1 x Self adhesive Indexed Rule (50056)
1 x CRB7 Mk3 Instruction Manual v5 (50365) view
Accessory Internal Pack (40019)
1 x Offset Handle (40001)
1 x 2 Part Anti Tilt Leg with new Wide Foot (40002)
1 x Pivot Pin & Fixing (40003)
2 x Mortise Posts & Fixings (40004)
9 x No.6 x ½” Wood Screws (50045)
1 x Large Compass Pivot Hub (40009)
Guide Rod Pack (40014)
2 x 25/64” (10mm) Compass/Guide Rods (50048)
2 x 9/32” (7mm) Guide Rods (50050)