Thank you for purchasing the MPOWER Combination Router Base (CRB7) we hope you enjoy using it. The CRB7 should give lasting performance if used in accordance with these instructions.
The following symbols are used throughout these instructions.
Denotes risk of personal injury, loss of life or damage to the tool in case of nonobservance of the instructions.
Refer to the instruction manual provided with your power tool.
Please read and understand the safety points at the end of these instructions as well as the power tool instructions before use.
PLEASE KEEP THESE INSTRUCTIONS IN A SAFE PLACE.
Users must be competent in safe routing practices before using this products.
This accessory is a retro fit, quick change, multifunctional router base for use with routers that:
The CRB7 Combination Router Base is intended to:
Note: All dimensions shown are based on a T5 router being used with a 1/4” (6.3mm) router cutter.
Fitting the CRB7 to your Router
Before use please remove protective film from the CRB7 baseplate.
Due to the large number of different router models and their differing base and rod configurations an initial CRB7 set up is required.
CRB7 Router Set-up
If the router cutter sits comfortably within the parameters of the baseplate letterbox (2B) slide the router off the adjuster guide rod (5) and go to step 7.
If the router cutter doesn’t sit within the parameters of the letterbox lift the router on the rod so that it flips the crank plate (5E) over. This will re-position the cutter within the letterbox.
If the cutter sits within the letterbox (2B) slide the router off of the adjuster guide rod (5) and go to step 7.
Now if the cutter still fails to sit safely within the letterbox; you will need to move the adjuster guide rod (5) to the other fitting hole (5E1 or 5E2) in its crank plate (5E).
Your CRB7 is now set-up and ready to use.
Included with the CRB7 is a self adhesive indexed rule (11), when fitted to the CRB7 baseplate (2) it will allow the user to see and reposition the router to a measured distance relative to its original position.
Many routers are manufactured with a cast indexing line or marking positioned centrally on the side of the router base (11A). If the router has no indexing line and you wish to utilize the indexed rule (11) simply draw a line on the base using an indelible fine black marker.
With the router fitted to the CRB7: Position the indexed rule (11) to run alongside the edge of the router base on the fixed guide rod (6) side so that a reading can easily be taken from the index line (11A) on the router base to the indexed rule (11).
When happy with its location ensure that the baseplate (2) is free of dust and debris, peel off the indexed rule (11) backing paper and carefully stick in position.
The CRB7 is fitted with a micro adjuster (4). The micro adjuster is designed to provide greater accuracy when positioning the router cutter prior to use.
Using the micro adjuster (4) to accurately position the router cutter.
Positioning the router cutter using the index markings on the CRB7.
The micro adjuster (4) has an indexed line (4A) machined across its width (in red), 1A similarly a corresponding index line (1A) is located on the bridge (1) either side of the micro adjuster (4).When the micro adjuster (4) is rotated once it will move the router 50/1000 Inch (1.25mm) from its original position. Four complete rotations will move the router 3/16” (5mm) etc.
It’s essential to remove the play from the thread when using the index lines.
Loosen both router fence rod knobs and turn the micro adjuster (4) in the desired direction so that both index lines (1A & 4A) line up.
Retighten the router fence rod knob on the adjuster guide rod (5).
The router cutter can now be moved a measured distance accurately using the micro adjuster (4). Should the router cutter need to be adjusted in the opposite direction repeat the above step to remove the play.
Tip: To remove float or backlash in the adjuster rod (5D) and micro adjuster (4) simply tighten the micro adjuster locknut (4B) against the bridge (1).
Adjustable Dadoing with a Clamp Guide
Using a clamp guide and router to rebate across the width of a work piece is a useful and common practice. However considerable time is taken to accurately set the clamp guide at right angles to the edge of the board simultaneously ensuring a precise distance from the desired position of the rebate. The CRB7’s micro adjuster (4) removes the need to set the distance between clamp guide and rebate.
Ensure the clamp guide (J) is set at right angles to the board edge and within the range of the routers movement on the CRB7’s guide rods (5&6). Slide the router to the approximate position of the required rebate and using the router fence rod knob (I) on the router base lock the router onto the CRB7’s adjuster guide rod (5). Plunge the cutter to the work piece surface (with the router turned off) and using the micro adjuster (4) bring the edge of the cutter up to the line denoting the location of the rebate. Run the bridge (1) end of the CRB7’s baseplate (2) up against the clamp guide (J) and using an even pressure ensure the router moves smoothly down the length of the clamp guide.
If a deep rebate or groove is needed several lighter cutting passes may be required.
If two grooves are needed within 11/32” (110mm) centre to centre of each other, (using a 1/4” cutter) they can be routed without moving the clamp guide by simply sliding the router down the CRB7’s guide rods (5&6) to the next location.
Before use ensure router fence rod knobs are tightened onto the CRB7 guide rods.
Always isolate router from power supply before adjustments or during set ups.
The CRB7 fitted with mortise pillars (10) saves time and gives a clean finish. Note: Maximum material width 8 5/8” (219mm) using mortise positions (C) and (H).
Material widths 2” (50mm) - 4 59/64” (125mm)
If the router requires final adjustment plunge and lock the router so that the cutter tip is just in contact with work pieces surface and use the micro adjuster (4) to accurately set the cutter position.
It’s important to ensure that the mortise pillars (10) remain in contact with the work piece sides along the complete length of the mortise. If the position of the mortise is at the very end of the work piece then additional guide battens (L) will need to be fitted to prevent the mortise pillars (10) literally falling off the end of the work piece.
Clamp one guide batten (L) on each side of the work piece, over lapping the ends. This will give a wider and longer platform to support the router.
Depending on the depth of mortise and material being used, several cutting passes may be required in order to achieve the correct depth safely.
Material widths 4 59/64” (125mm) - 8 5/8” (219mm).
Fit the mortise pillars (10) to the underside of the baseplate (2) location (C and D or C and H) using the two M4 screws (13) provided. Then follow the same instructions as above.
The CRB7’s anti-tilt leg (8) is designed specifically to aid stability when routing narrow sections of material. The leg is in two parts so its height can be reduced if required.
Maximum support height = 3 1/8” (80mm)
Minimum support height = 5/16” (8mm)
Before completing the routing pass check that the bench surrounding the work piece is smooth and even. Complete a couple of dry runs with the router around the work piece ensuring that the anti-tilt leg (8) has a clear path and the router remains stable whilst the pass is completed.
Adjustable False Panel Groove Copier
To repeat a routing pass a set distance from another pass or to produce a series of closely routed groves or rebates can be efficiently achieved using the false panel copy tongue feature. The CRB7 can be set up easily for this purpose.
Machine up a small section of copy batten (N) min. 6 5/16” (160mm) length in timber or a solid plastic i.e. nylon or polyethylene. The copy batten should copy the size and profile of the router cutter (K) that is to produce the groove. Test the finished copy batten in a sample groove to ensure a snug but not tight fit is achieved.
Using a clamp guide or side fence set up; rout the first groove on the workpiece, then:
Using three No.6 woodscrews (12) line up the copy batten (N) with the three countersunk holes (locations C & E) located in the baseplate (2) at the opposite end to the bridge (1) and screw the copy batten (N) to the underside of the baseplate (2).
To avoid threading the small section copy batten (N) screw it in position by hand not with a drill driver.
Fit the CRB7 to the router. Check that the copy batten (N) slides into the first groove and moves smoothly along its length. Set the required distance between the router cutter and copy batten (N) by sliding the router along the CRB7 guide rods (5&6) if necessary using the micro adjuster (4) to finely adjust it’s position then lock the router in place using at least one router fence rod knob on each side of the router base.
The 2nd groove can now be routed. In order to maintain accuracy use a consistent pressure when holding the router in position during each pass of the router.
Clean the 2nd groove and slot the copy batten (N) into it to produce the 3rd groove. Repeat as required.
The offset baseplate function is designed to increase the router-base surface contact area to the work piece that’s being worked on improving stability and reducing the chance of making an error during a routing pass.
Slide the router onto the CRB7’s guide rods (5&6) and lock the router in position using the router fence rod knobs (I). Ensure the router is positioned at the far end from the CRB7 bridge (1) allowing the router cutter to sit safely within the baseplate ‘letterbox’. Fit the offset handle (7) into bridge pinchbolt hole and lock in position using the bridge pinchbolt (3).
The CRB7 is now set up and ready for routing.
The handle/bridge (1) end of the CRB7 should be centred over the work piece.
Cutting Small Circles Radius 3/4” (19mm) - 8 13/16” (224mm)
Routing out accurate circles that are smaller than the router base itself is a difficult operation. The CRB7 allows circles to be cut out easily from as small as 3/4” (19mm) radius up to 8 13/16” (224mm) radius.
Use baseplate hole C for circle radius approx. 3/4” (19mm) – 4 15/16” (125mm).
Use baseplate hole H for circle radius approx. 4 1/2” (115mm) – 8 13/16” (224mm).
Pivot Pin Storage:
The pivot pin (9) can be stored in the back of the bridge (1) when not in use. The M4 screw (13) must be screwed into the pivot pin (9) for the magnetic storage to be effective.
Ensure that one router fence rod knob is secured either side of the router base and the router depth stop is set appropriately.
Minimum Radius (R) 3/4” (19mm) Hole C
Maximum Radius (R) 4 15/16” (125mm) Hole C
Maximum Radius (R) 8 13/16" (224mm) Hole H
Proceed to cut out the circle by rotating the CRB7 and router around the pivot pin (9). Depending on the workpiece material several shallow routing passes may be preferable.
For difficult or heavy cuts, the pivot pin (9) may be replaced with a countersunk No.6 woodscrew (12) secured into the workpiece. This No.6 woodscrew (12) should be a snug fit in the baseplate (2) to avoid ‘chatter’.
Tip: If it’s desirable to avoid a central drilling in the workpiece, use a 1/4” (6.35mm) thick overlay secured with double-sided adhesive tape or any similar method - e.g. cramps, screws etc - and drill a 1/4” (6mm) diameter hole in the overlay; then rout through the overlay and into the workpiece beneath.
Using the CRB7 with the TREND Varijig & Routers with Euro style Guide Bush Fittings.
The anti-tilt function of the CRB7 can be used as an alternative to the anti tilt shoe (included with the TREND Varijig). For routers that can accept Euro style guide bushes. A long spigot 40mm diameter guide bush (P) is required Ref. GB/40/B. The guide bush is fitted into the router guide bush recess. When routing out smaller rectangles narrower than 120mm, the increased size of the baseplate (2) provides sufficient area across the Varijig frame (O) and the anti-tilt leg (8) is not required.
In certain circumstances the router handle prevents setting the correct depth of the anti-tilt leg (8) however, the anti-tilt leg can be shortened as it’s a two part component, simply unscrew the top section and use the remaining shorter section.
A longer spigot guide bush must be used.
After use remove the CRB7 from the router and store carefully.
Please only use MPOWER original accessories.
Edging and Dowel Flush Trim Kit Ref: CRB/LIPTRI
An additional function of the CRB7 is a fast and accurate method of consistently trimming solid hardwood and iron on edging flush to its core panel. The kit can also be used to trim off the excess wood when using dowel plugs.
The accessory has been designed to operate over a long period of time, with the minimum amount of maintenance. Continual satisfactory operation depends upon proper tool care and regular cleaning.
Recycle raw materials instead of disposing as waste.
Packaging should be sorted for environmental-friendly recycling. The product and its accessories at the end of its life should be sorted for environmental-friendly recycling.
All MPOWER products are guaranteed against any defects in either workmanship or material, except products that have been damaged due to improper use or maintenance.
Our policy of continuous improvement means that specifications may change without notice. MPOWER Tools Limited cannot be held liable for any material rendered unusable, or for any form of consequential loss.
Manufactured by MPOWER Tools Ltd™
UK Design Registration 300363, US & EU Design Patents Pending, US, EU & UK Patents Pending
Manor Farm, Newton Tony, Salisbury, Wiltshire, SP4 0HA
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© MPOWER Tools Ltd™ 2012