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Old 12-18-2007, 07:45 PM
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Default Drill bits

I have been looking at the 110 piece drill bit set at Harbor Freight for some time now, not believing that they could be any good for $39 on sale. But tonight I stopped at our new Harbor Freight store and brought them home. I grabbed the 1/2" bit and tried to drill threw a 1/2" mild steel plate but it took a long time to burn threw. I was going to get the set back to the store before I calmed down to get my money back when I noticed when I removed the bit that the heels of the bit were hitting, preventing it from drilling. I ground down the heels and it worked great several times. I tried about 10 other bits and they seemed to work fine so I guess I will keep them, I hate to buy the fine China but its hard not to these days.
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Old 12-18-2007, 08:31 PM
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Digr,

I bought some of the HF drill bits, to use on jobs, where they are total expendable, never to return. Most have worked okay, the tend to go dull a little faster, and appear to be very brittle. I dropped a 7/16" bit on the floor and it hit perfectly flat, and shattered into about 50 pieces, total dust pan material, I've also had them shatter, when the bit grabs, the drill jerks, then a loud snapping sound, and the bits into multiple pieces. I'm always making sure the other have proper eye protection on when using them. They are not bad drill bits, I use them alot, you have to remember they are not quality bits, they are useless on SS and harder metals.

Jack
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Old 12-18-2007, 09:52 PM
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I just picked up the 1-60 set for $9.99.
You cant see it by eye, but everything is off on my set.

ALL the grinding geometry is off.
The points are off. the side clearance is off.

Hole cut good, but over sized .015.
I haven't had time to fully check them out but I also think some may be bent .007. that may be a problem for someone with a drill doctor.
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Old 12-18-2007, 09:58 PM
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Quote:
Originally Posted by GWIZ View Post
I just picked up the 1-60 set for $9.99.
You cant see it by eye, but everything is off on my set.

ALL the grinding geometry is off.
The points are off. the side clearance is off.

Hole cut good, but over sized .015.
I haven't had time to fully check them out but I also think some may be bent .007. that may be a problem for someone with a drill doctor.
WOW .015 over! All drill bits drill oversize but that is a bit much. I guess you get what you pay for.
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Old 12-18-2007, 10:06 PM
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I did not check All the bits.
The HOLE came out over size, one cutting lip longer then the other will do that.

Last edited by GWIZ; 12-18-2007 at 11:29 PM. Reason: Change wording.
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Old 12-18-2007, 10:49 PM
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I also have a 110 piece set and have found that all of the bits I generally use seem to be bent. I don't have the equipment to check though. Rolling them on a flat surface they seem okay but put them in a drill and you can definitely see the shaft wobble.
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Old 12-19-2007, 09:14 AM
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Quote:
Originally Posted by digr View Post
I have been looking at the 110 piece drill bit set at Harbor Freight for some time now, not believing that they could be any good for $39 on sale.
I just got a set from Enco that is 115 pcs for $83 with no shipping, tax or guilt because they were made in USA. They were on sale for $93 but I had 10% off plus a code for free shipping so I went for it. I have not tried them out yet though. They still have pretty wrapping and a bow on them.
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Old 12-19-2007, 09:22 AM
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Well Def if you take the bow and wrapping off they won't be new anymore
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Old 12-19-2007, 07:46 PM
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I sent my mom powerful subliminal messages so I think I'm getting a set of cobalt bits from grainger
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Old 12-19-2007, 07:59 PM
shott8283 shott8283 is offline
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funny this post came up.. i received a drill dr. for a gift a while back.. .. i tested it out on some of my junk bits layin around (much like the HF, ACE bits) and the bits actually cut 10X better then they did when new.. i agree with the fella above.. their manufacturing tolerances arent the best..but when you need a bit to cut through something to get the job done. (or in my case.. use the crap bits for work b/c my boss/company refused to reimburse us for broken tools) they'll do fine..


the nice thing about the drill doctor .. especailly the model that i have .. is that you can play around and experiement with different styles of grinds on it to see what works best for whatever application.
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