(Part 2) Best industrial drill bits according to redditors
We found 68 Reddit comments discussing the best industrial drill bits. We ranked the 29 resulting products by number of redditors who mentioned them. Here are the products ranked 21-40. You can also go back to the previous section.
Bastard files with remove the most metal of all other file grinds.
I got started making knives several years back using a hand jig inspired by Aaron Gough.
Here's a link:
https://www.youtube.com/watch?v=r9iNDRwwBQQ
You can find several more youtube video's on the subject.
Your design looks pretty good, I would recommend doing one blade from start to finish until you perfect your process. 6 mm stock is pretty thick so you might want to skeletonize the handle a bit to better balance the blade and reduce weight. Here is a link to an example:
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https://www.knifecenter.com/item/WTWRATK/white-river-knives-owen-baker-jr-atk-always-there-knife-s35vn-stonewashed-blade-skeletonized-handle-kydex-sheath
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be careful not to take out too much material just behind where the knife meets the handle, this can create a weak point if you decide to baton with the knife.
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I would get a step of bit for drilling pin holes and skeletonize the knife, I like this one. https://www.amazon.com/DEWALT-DWA1783IR-8-Inch-1-2-Inch-IMPACT/dp/B0090IHBL4/ref=sxts_sxwds-bia?gclid=Cj0KCQiAn8nuBRCzARIsAJcdIfNba4wvdHAT8G-Xw7-192SSo25KbGIIFRTaciL4vTm_fm1Ye7TqVvoaAignEALw_wcB&hvadid=153692517255&hvdev=c&hvlocphy=9031951&hvnetw=g&hvpos=1t1&hvqmt=e&hvrand=1119223531089504081&hvtargid=aud-837686656069%3Akwd-6841401801&hydadcr=1611_9512018&keywords=dewalt+step+bit&pd_rd_i=B0090IHBL4&pd_rd_r=3301b045-680f-4746-bf0c-1409a9698aae&pd_rd_w=U7oJ6&pd_rd_wg=l4rot&pf_rd_p=1cb3f32a-ccfd-479b-8a13-b22f56c942c6&pf_rd_r=HW4NWM70PNESNP2QKEG0&psc=1&qid=1574091165
So much easier to make holes than a typical drill bit, even if you use a carbide drill bit.
Also make sure you make all of your holes and rough grind the bevels before you heat treat, as once hard, removing or drilling metal will be tough. Also keep the edge of the blade at least 0.4 mm or so at the edge before you heat treat, if you grind it too think, the blade will warp.
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Good luck!
> That might be a toughy. I have a 1" drill bit that I used to drill through aluminum and that worked alright, but that was without any paint.
I was going to suggest wet drilling (using cutting oil) and a 1" or variable size HSS drill bit like this.
Alright, First thing is first. The firewall is the think sheet of metal that separates the inside of the car, from the engine bay.
First thing is first, look at your firewall (The back wall of the engine bay) and try to find out if there is some way to run a thick wire through there.
Look for rubber seals that already have wires running through them.
Also note, you want to run your power wire on the same side of the vehicle as the battery. So if your battery is on the drivers side, you want your power wire to run drivers side. Passenger side battery means you run your power wire on the passenger side of the vehicle.
If you do NOT have an easy or reasonable path to run your power wire, then you drill. You drill CAREFULLY! If you make a mistake, you can end up costing yourself thousands of dollars in damage from 1 little mistake.
Easy way to know where to drill is to use your eyes! LOOK at what you are drilling before you drill! DO NOT DRILL THROUGH SOMETHING IMPORTANT! Use things going through the firewall as guides. If your throttle cable runs from one side of the firewall, and it has a spot above it that looks good to drill, make sure to look at the opposite side of the firewall to make sure you're not going to hit something.
Once you have a hole, use a grommet! (some sort of protective device, rubber or plastic) so the metal doesn't shred the power wire's shielding.
if you're unsure, then drill a pilot hole first, and poke a coat hanger or some kinda rod through it first, if it clears, and you can see that the other side is clear, then you're home free!
I use a step-bit set that looks like this! http://www.amazon.com/Allstar-Performance-ALL11040-Step-Drill/dp/B003BZR1Z8/ref=sr_1_17?s=industrial&ie=UTF8&qid=1448935934&sr=1-17
Good luck!
Both of these sets work well. You do get what you pay for....keep that in mind.
Expensive
Norseman Uni-Bit Set https://www.amazon.com/dp/B0036YZWLE/ref=cm_sw_r_cp_api_PdTyzb1GGBTKB
Cheap
CO-Z 5pcs Hss Cobalt Multiple Hole 50 Sizes Step Drill Bit Set with Aluminum Case https://www.amazon.com/dp/B0177PN6SI/ref=cm_sw_r_cp_api_reTyzbBCBYFH1
Just found it on Amazon it’s $12.49.
TEMO M35 Cobalt Step Drill Double Flute, 6 Size from 3/16 inch (4.8mm) to 1/2 inch
www.amazon.com/dp/B00385LJAO/ref=cm_sw_r_sms_c_api_lLFRAbRKA722W
I worked in a machine shop for eight years before becoming an electrician...trust me this will work.
Something like this should work.
MAGBIT 851.1500 MAG851 1/4-Inch to 1-1/2-Inch Max Diameter High Speed Step Drill Bit, 11 Steps https://www.amazon.com/dp/B005M27CGG/ref=cm_sw_r_cp_apa_i_FBWuDbY7CY3XN
Pretty sure this is the one I use.
This Step Drill Bit is what you'll want. 9/16" - 7/8" is the standard size hole for most weldless bulkheads. You can find those bits cheaper, but that is one that will last.
Hole saw. http://www.amazon.com/13Pc-Hole-Door-Knob-Lock/dp/B004NJTYQA/ref=sr_1_4?ie=UTF8&qid=1453153378&sr=8-4&keywords=hole+saw+drill
or Unibit.
http://www.amazon.com/Klein-Tools-59009-High-Speed-Step-Drill/dp/B0035WK7AI/ref=sr_1_4?ie=UTF8&qid=1453153416&sr=8-4&keywords=unibit
But we typically don't have to drill hole in boxes, as they come with knockouts for the wire.