Drill America DWDCO1INCH 1" Reduced Shank Cobalt Drill Bit with 1/2" Shank, DWDCO Series

The speed and length of the plates are the same. Eight plates had to be drilled with four holes each. There is a terrible chirp from both bits. A special mention should be made of the one on the Craftman These were ordered only because I was in a hurry to finish a client's job and this option offered the quickest delivery. As a result of the drill bit making hairline cuts on the metal plates, the project took an eternity to finish. In spite of a ton of oil, the other bit on the ridgit started cutting well after the second plate, but it skipped and chirped like crazy all the way. Moreover, I dislike the fact that I bought drill america and went to the store and got "qualtech. " If I didn't have a rush, I would have returned the products. Having already bought another drill bit from a different brand I can see that about half the gold in the drill bit has already worn off when drilling. "Drill Hog M42 Cobalt " As you can see in the photos about half the bit has already worn off. That has never happened with any of the other cobalt m42 drill bits I've used. I wonder if there is a cobalt core beneath where they are made or if they have a coating just like the cheap gold.

Melvin Marquez

| Nov 11, 2020

The drill bit is not of quality. There was a snap at two spots in the marking depth of about 1/4". It was of a good size. I was happy with the finish. This was done at 105rpm for mild steel A36. It looked good when it came out in curls. A cooling system was in place. There was a 3/8" pilot hole so that it was only cutting on the outside diameter. There were no chattering sounds detected and BAM it just snapped halfway Photos are shown in the following paragraph. When I accidentally dropped the Chuck when I took it out of my tail stock, the shank snapped.

Samir Keller

| Jan 16, 2021

It is designed for use on 1/4" angle iron and is 11/16" wide. No cutting oil was used while drilling 1/8" pilot holes with Red Helix Cobalt bits from Milwaukee. While drilling steel, Milwaukee bits produce flawless curls from the metal, they do not heat up, are quiet, and do not heat up. As a contrast, this bit is prone to making shards and sticking. No matter how much oil is being cut, it is very loud. To be sure, I drilled a couple of 1/2" holes with the Milwaukees to make sure the bit size was not the cause The performance of the 1/8" is the same. (As does the angle iron) This bit gets very hot as well. Because of the limited number of holes I drilled, it got the job done, but I.

Ryleigh Knight

| May 09, 2021

They are coated with a coating. I have stepped up to a cobalt bit after doing some research. Compared with other cobalt bits I found, this was almost half the price. This bit worked like butter through the iron and arrived on time. Keeping oil on the surface would keep the surface cool (low speed) I anticipated this half-marathon A price bit would be wasted after use, but it still seems to be at least ready for another round of.

Rex Friedman

| Feb 01, 2021

Even with slow speed of the drill and the use of cutting fluid, it only made it through two holes before it became too dull for use. We aren't sure if it is really a carbide bit, or if the old cast steel was so tough that it worked like a carbide bit. It got so hot by the time I finished the two final holes that I sharpened the bit.

Marisol Bryant

| May 30, 2021

A mill is being used to cut axle holes in 1/4-inch steel with this tool. As if it were aluminum, cuts through steel with ease. There was likely an error in the cutting speed and coolant used by other reviewers. I get good chips with this bit when I use the right speed and apply coolant. If you are working with larger bits, you need to step up to them. With bits up to 5/8ths 1/2 1/4 (including titanium coating), this kit is perfect. While I am unable to comment on the performance of this bit on thick steel, it does its job fairly well on cutting odd metal projects.

Jaxxon Nash

| Feb 09, 2021

In my case, the use was with a 1/2 horse drill, a 3 point tractor attachment system and three sets of three 1/2" steel plates. I was unable to hold the bit while it bit in because it worked well, but it was difficult when it bit in. I was able to stabilize the drill a bit better with a bit of ingenuity. result After bending the shaft a number of times, I hammered it back into straightening it out, continued and successfully made two 1 1/16 hole. Free work for hard workers While the bit handle may show signs of wear, the bit edge remains sharp and should operate for many more drill press cycles.

Kamden Daniels

| Feb 18, 2021

It arrived very quickly and was packaged thoughtfully to make sure it did not get damaged or rusted, so that was also a plus.
Once I opened it, I noticed that some of the fluting at the base had small However, for only $22 it's not that bad. My next step was to go to the garage and set up the drill press. I spent 30 minutes drilling one complete pass through two inch diameter mild steel square tubing (set at low speed). As far as I knew, the work piece and bit were properly aligned and oiled on a regular basis. It took me 20 minutes to complete the first and 10 minutes to complete the second due to pre-planning With a 1/2 titanium coat bit (Dewalt 1/2 size), I drilled it quickly (about 20 seconds). I took the necessary steps to care for the bit during this process, but by the end of it, it was totally dulled and most of the plating was gone. Not only is the coating flawed, but the metal is too soft as well.

Everleigh Gross

| Nov 06, 2020