Half Round
Bull Nose Bit
Carbide
Tipped
This router bit is used for creating a convex shaped profile on the side of the workpiece in one pass producing a perfect half radius bull nose profile
- Design helps minimize kickback
- Smooth edge requires little or no sanding before applying finish
This router bit has a 12,7 mm shank (shaft) that will fit most large routers. Please ensure that you select a router bit with a shank (shaft) size that will fit into your router collet.
PRO-TECH router bits are manufactured in Taiwan.
Router Bit Maintenance
_x000D_Fortunately, this is pretty easy. The best way to prolong the life of a router _x000D_ bit is to keep it clean. And what you need to do varies with the type of bit._x000D_
_x000D_Note: Sharpening is extremely important too.
_x000D_A. No Bearings:
_x000D_To clean bits without bearings, first blow off any dust. Then remove any resin _x000D_ that has built up. (Resin places a drag on the bit which can cause it to overheat _x000D_ and burn.)
_x000D_Resin removers are available. It's the same stuff you use to clean your saw blades._x000D_
_x000D_B. Bits with Bearings:
_x000D_To clean bits with bearings, first, remove the bearing. Then clean the bit as _x000D_ you did with non-bearing bits.
_x000D_It's important to remove the bearings because even though router bearings are _x000D_ 'sealed,' resin remover can sneak in and dissolve the bearing grease. If this were _x000D_ to happen, you would be faced with the problem of trying to lubricate a sealed bearing._x000D_
_x000D_Despite the claims of bearing grease sellers, we've never had much luck with _x000D_ this. Once that grease is gone, just go buy a new bearing.
_x000D_C. Bit Shanks:
_x000D_Periodically inspect the shanks of your router bits for rust or burrs. Either _x000D_ of these can be removed quickly with ScotchBrite®. Left on, they can _x000D_ interfere with your ability to properly tighten the bit in the collet.
_x000D_How Fast Should a Router be Running?_x000D_
_x000D_If you've got a router with variable speed, then you've got the power to improve _x000D_ the quality of your cut. In general, the larger the bit, the slower the speed you _x000D_ need. The perfect solution for dealing with varying bit sizes is a variable speed _x000D_ router.
_x000D_Here are general guidelines for most bits:
_x000D_Hand Held Router Use
_x000D_| Bit size | _x000D_Bit size | _x000D_rpm | _x000D_
| Small – 12.7 mm | _x000D_1/16' to 1/2' | _x000D_22,000+ | _x000D_
| 12,7 mm – 28,6 mm | _x000D_1/2 to 1 1/8' | _x000D_14,000 - 18,000 | _x000D_
| 28.6 mm – 50,8 mm | _x000D_1 1/8' to 2' | _x000D_12,000 - 14,000 | _x000D_
Router Table Use
_x000D_| Bit size | _x000D_Bit size | _x000D_rpm | _x000D_
| 50,8 mm – 63,5 mm | _x000D_2' to 2 1/2' | _x000D_12,000 - 14,000 | _x000D_
| 63,5 mm & larger | _x000D_2 1/2' and up | _x000D_8,000 - 12,000 | _x000D_
_x000D_
| Part No. | _x000D_Shank dia. | _x000D_Bull Nose Ø | _x000D_Cutting Height | _x000D_Radius (r) | _x000D_
| KP372461 | _x000D_1/2 inch | _x000D_55/64 inch | _x000D_1 7/32 inch | _x000D_27/64 inch | _x000D_
| 12,7 mm | _x000D_22 mm | _x000D_31 mm | _x000D_11 mm | _x000D_
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Length of Shank: 38 mm
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| consider _x000D_ safety for your health and the people around you | _x000D_|||
_x000D_
General safety suggestions:_x000D_It is advisable to always have the following items nearby and in a good _x000D_ condition _x000D_
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_x000D_
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_x000D_
Wear Gloves _x000D_
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_x000D_
_x000D_
Eye Protection _x000D_
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_x000D_
_x000D_
Hearing Protection _x000D_
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_x000D_
_x000D_
Dust Mask _x000D_
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To use router bits safely (and to get the best results from your router), the _x000D_ router bits need to be installed properly into the router's collet. Improper installation _x000D_ of your bits can cause excessive chatter and could increase the likelihood that _x000D_ the bits will break when in use.
_x000D_Clean and sharp
_x000D_First of all, before beginning any routing operation, check your bits to _x000D_ make sure that they are clean, relatively free of pitch, and most of all, sharp. _x000D_ If the bit is dull, chipped, is excessively burned or has any other defect, _x000D_ it should be sharpened or replaced before use.
_x000D__x000D_
Correct _x000D_
collet and collet nut fit
_x000D_
Most router collets have a recess (groove) that needs to click into a circlip _x000D_ that resides inside the collet nut. Failing to ensure that the collet 'clicked' _x000D_ into the collet nut will cause you to struggle to remove the router bit after tightening. _x000D_ This could cause the collet to break or be removed by a technical repair centre.
_x000D__x000D_
_x000D_
Correct _x000D_
fit inside the collet
_x000D_
When installing the bit into the collet, do not tighten the collet with the bit _x000D_ 'seated.' Instead, insert the bit until the shank (bit shaft) reaches _x000D_ the bottom of the collet, then ease it out about 2 mm before tightening the collet._x000D_
_x000D_When the bit is tightened, there should be no less than 2/3 _x000D_ 's of the length of the shank in the collet. If your bit has a shank that is too _x000D_ short, then the bit should be replaced.
_x000D__x000D_
Safety gear
_x000D_There are a few other safety measures to keep in mind whenever you use your router. _x000D_ First of all, remember to always wear appropriate safety gear as indicated above.
_x000D_Correct speed setting
_x000D_Second, be sure to set your router to the proper speed for your router bit. _x000D_ Setting your router to an incorrect speed will not only affect the router's performance, _x000D_ but also can cause the bit to break much more easily and even cause bodily harm. _x000D_ The speed at which a router bit turns can be important. The typical router runs _x000D_ at about 22,000 rpm, which is fine for most bits. But as the diameter of the bit _x000D_ increases, you’ll want to slow things down.
_x000D_Also, before beginning any routing operation, be certain that you give the router's _x000D_ motor time to come up to full speed for the chosen setting. Beginning to cut before _x000D_ the bit is at full speed can give less than desired results.
_x000D__x000D_
Observe _x000D_
the following at all times
_x000D_
- _x000D_
- Wear a protective face shield or Safety Glasses to prevent eye and face _x000D_ injury. _x000D_
- Wear ear plugs or ear muffs to protect your hearing. _x000D_
- Use a respirator or dust mask to give protection from dust particles. Wood _x000D_ dust may remain in the air for hours after using power tools. _x000D_
- Always read and follow router operator's manual instructions. _x000D_
- Make sure that router rpm's and the bit selected match. _x000D_
- Dress properly. Wear short sleeves, no loose fitting clothes, proper footwear _x000D_ and no jewellery. Tie back long hair. _x000D_
- _x000D_
Always _x000D_
be sure the router is unplugged before replacing bits and that the switch is _x000D_
off before connecting the router. _x000D_
- Be sure the router bit has completing stopped spinning before sitting the _x000D_ router down. _x000D_
- Be sure bits, clamps and attachments are secure before starting up. _x000D_
- Keep children, pets and visitors at a safe distance. _x000D_
- Be especially cautious when working small pieces. _x000D_
- _x000D_
Keep _x000D_
hands and fingers away from revolving bits and cutters. _x000D_
- Do not operate routers in moist or wet areas. _x000D_
- Always grip tool tightly and be prepared at start-up to resist the motor _x000D_ torque. _x000D_
- When using a router table, make sure on/off switch is easily accessible._x000D_ _x000D_
- Learn the sound of your router and shut it off at any unfamiliar sounds _x000D_
or irregularities.
_x000D_ Never start the router with the bit in contact with the material. _x000D_
- Always feed in the proper direction, against the direction of bit rotation. _x000D_
- Maintain equipment. Replace worn parts, discard worn-out bits and check _x000D_ router periodically. Clean parts with appropriate solvents. _x000D_
- _x000D_
Don't _x000D_
operate a tool if you are tired or under the influence of medication, drugs, _x000D_
alcohol or while smoking. _x000D_
- Check wood for nails, screws or loose knots before routing. _x000D_
- Keep your mind on your work, avoid distractions, work at a comfortable pace _x000D_ and stop before you get tired. _x000D_
Do a dry run
_x000D_- _x000D_
- Place the router on the final work surface and test you cut by moving the _x000D_ router over the whole are to cut with THE ROUTER SWITCHED OFF _x000D_
- You do not want to waste an expensive piece of wood _x000D_
- You do not want to start all over _x000D_
- Never met anyone with spare fingers - SAFETY _x000D_
Using a Router in a Router Table
_x000D_Router Table Safety
_x000D_Although most router bits are small, they can be potentially dangerous and should _x000D_ deserve your attention and respect.
_x000D__x000D_
1 _x000D_
Use push sticks or a push block to position your hands a safe distance from the _x000D_
router bit.
_x000D_ _x000D_ 2 Use large-diameter bits only in a router table. Using bits over 25mm Ø _x000D_ (diameter) in a handheld router can possibly cause you to lose control of the tool _x000D_ and harm yourself or bystanders.
_x000D__x000D_ _x000D_ 3 Always wear a dust mask as well as eye and hearing protection.
_x000D__x000D_ _x000D_ 4 Take light cuts. Heavy cuts invite kickback. If necessary, move the fence _x000D_ closer to the bit or switch to a larger guide bearing/bush.
_x000D__x000D_ _x000D_ 5 Use a featherboard (anti-kickback device) to support the workpiece against _x000D_ the router table and/or fence.
_x000D__x000D_
6 _x000D_
Never climb-cut. Always feed the stock from right to left. Against the rotation _x000D_
of the router bit. (see illustration)
_x000D_ _x000D_ 7 Avoid routing small stock. Instead, rout a larger piece and cut it to size _x000D_ afterwards. If you absolutely have to profile a small piece, build an suitable jig _x000D_ or secure the workpiece.
_x000D__x000D_ _x000D_ 8 Always use a guard. If the fence didn’t come with a guard, make your own.
_x000D__x000D_ _x000D_ 9 Never start the router with the bit in contact with the material.
_x000D__x000D_ _x000D_ 10 Don’t force the router bit or overload the router. Excessive heat is an _x000D_ enemy.
_x000D__x000D_ _x000D_ 11 Secure/fasten the router in the base before starting/switch on the router.
_x000D__x000D_
12 _x000D_
Don’t bottom out the bit in the collet or partially insert the bit. Instead, completely _x000D_
insert the bit, and then back off approximately 2 mm. At least 2/3 _x000D_
's of the router bit shank should be inside the collet.
_x000D_ _x000D_ 13 Be sober and not under the influence of medicine that causes a lack of _x000D_ concentration
_x000D__x000D_ _x000D_ 14 Tidy up your workshop to ensure the ability to move freely with enough _x000D_ room around the router table
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