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I have included a table that shows the recommended speeds for Forstner bits.Copied:In using Forstner Bits, excessive speed will cause burning. I am happy with the purchase.
In looking around I thought it was an opportune time to purchase this set. When I was starting a new project in my shop I needed a couple of new bits.
What is nice about Forstner bits is they are guided by their circular rim instead of their center, and consequently will bore a circle hole or an arc of a circle and can be guided at an angle when necessary regardless of woodgrain or knots.I use these bits for both through holes and as counterbores to recess screw heads, carriage bolts and hurricane nuts. The cost was [.].
with free shipping. I didn't realize how much I made do with an almost right size until I started using these bits.For people who do not have much experience working with larger diameter Forstner bits, from my experience they are better used in a drill press because they like to be run at a lower RPM.
To avoid this and drawing the temper in the tool, the following speeds for the various sizes are suggested: --SOFT WOOD (Pine)----------------------HardWood (Maple) Tool Diameter-------RPM--------------Tool Diameter-----RPM ---3/8-5/8---------2400-----------------3/8-5/8-------1800 ---11/16-1---------1800-----------------11/16-1------1400 ---1 1/16-1 7/16---1200-----------------1 1/16-1 7/16--900 ---1 1/2-3----------600-----------------1 1/2-2 1/8-----450
They are all still working.I took them to my sharpener, and he told me they were not worth sharpening, so when they start to cut too poorly, I will probably buy another set just like them.Is there any difference between these and the next step down from the junk tool store. These are decent bits for the money. I don't know, but these have served me well. They are not as good as buying a set of Freud HSS bits, but I could not afford a set of Freuds either. I have drilled a lot of holes with these, even abused a few of them by drill into aluminum. I have a few Freud that are HSS and Carbide tipped, and the difference is substantial. However, we are talking about single bits that cost more than this entire set.
I was not very happy with my purchase. The bits weren't as sharp as they should be. They do not cut very well. Also the case they came in was broken.I'm not sureI'll order again.
I used most of the bits already and they are super sharp with clean holes.nice case too, what more can i say.
This can take 5 minutes per bit.Why not 1 or 2 star. Even to bare eyes the cutting edges look frayed, like a wood chisel that really needs sharpening.As a consequence this new forstner bit does not cut as fast as a Freud bit I have used for years. First thing I noticed out of the box is that the bits are visibly dull. I suspect that after sharpening you still end up with a drill bit that lasts better than a cheaper version. (Even though the design and shape are almost identical to the Freud). The bottom of drill holes in pine shows tearout and some fraying.I have tried to sharpen a bit with a dremel, this improves things. Cheaper ones of course may be dull(er) as well. More importantly, these bits are straight and precise so they don't wobble like cheaper ones.
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