Single Cut vs Double Cut Carbide Burrs: Which Cut for Steel?

Published answers to this question conflict. Seller guides split on cast iron, stainless and hardened steel, and AI assistants rarely say where their answer came from. Drillco makes the only single cut burrs we sell, and it answers the question on page 15 of its solid carbide burs catalog. This guide reports what that page says and marks the places where the recommendation is ours. The tool goes by other names too: die grinder bit, burr bit, rotary file and tungsten carbide burr.

What is the difference between single cut and double cut carbide burrs?

A single cut carbide burr has one right-hand spiral of teeth, and a double cut carbide burr has right-hand and left-hand flutes that combine into a chisel-type tooth. The teeth set the chip. Drillco describes the double cut chip as an "easy to handle granular type chip, in most metals, as opposed to the conventional sliver type chips."

Trait	Single cut	Double cut
Teeth	One right-hand spiral	Right-hand and left-hand flutes combined
Chip	Long, sharp slivers	Small granules
What Drillco says it does	Smooth finish for general purpose use	Faster penetration and stock removal, minimal bounce or chatter
Rated on (Drillco)	Steel, cast iron, other ferrous and non-ferrous materials	"The widest possible variety of materials"
Also called	SC, right hand spiral	DC, cross cut, alternate cut
How we sell it	Drillco sets only	Walter singles, Drillco sets and Walter kits
Price, 8 pieces, 1/2 in. heads	$301.11 (70S003SC)	$301.11 (70S003DC)

Verdict: Double cut when you want metal gone with less bounce. Single cut when a smooth finish on general work matters more. The price is the same, so choose by the work.

To tell which cut you already own, look at the head under good light. Lines that all run one way are a single cut. Lines that cross and leave rows of small points are a double cut. A few wide, open flutes mean an aluminum cut.

Which carbide burr cut removes metal faster?

A double cut carbide burr removes metal faster than a single cut burr, according to Drillco's catalog. Page 15 says the double cut tooth "results in faster penetration and stock removal with minimal bounce or chatter." The same page says that over its life the double cut gives "faster stock removal, less operator fatigue, and maintains a good finish."

You will read the opposite in many seller guides, which call single cut the aggressive cut. Walter's product pages describe both cuts as strong at removal and do not compare them. Drillco's page is the one that puts the two side by side, so it is the one we follow.

"Big chips look fast, so people assume single cut is the aggressive one. Drillco says double cut takes metal off faster with less bounce, and since both sets cost the same, there's no reason to guess. If the grinder's in your hand, put a double cut on it."

David Castro, President, Eldorado Tools

Which carbide burr should I use on steel, stainless steel and cast iron?

Use a double cut carbide burr on steel, stainless steel and cast iron for most grinding by hand. Drillco rates double cut for "the widest possible variety of materials." Neither Drillco nor Walter names a cut for stainless specifically, so stainless is our recommendation: stainless hardens where a burr rubs, and a cut that keeps removing metal with less bounce is the safer choice.

Find your job below and read across. To choose the head shape for the job, use our carbide burr shapes chart.

Pick this when	Cut	SKU	Product	Price	Sold as
Weld crown on steel	Double	01V004	Walter SA-5 cylinder, 1/2 x 1 in.	$88.95	Each
Fillet weld on stainless	Double	01V015	Walter SF-5 round nose tree, 1/2 x 1 in.	$92.02	Each
Lowest cost to try a double cut	Double	01V057	Walter SB-3 end cut cylinder, 3/8 x 3/4 in.	$29.97	Each
Stocking a bench for ferrous work	Double	70S003DC	Drillco No. 3, 8 pieces, 1/2 in. heads, USA	$301.11	Set, $37.64 a burr
Smooth finish on steel, cast iron or non-ferrous metal	Single	70S003SC	Drillco No. 3, 8 pieces, 1/2 in. heads, USA	$301.11	Set, $37.64 a burr
Pencil grinder or rotary tool, 1/8 in. shank	Either	70S006DC or 70S006SC	Drillco No. 6, 8 pieces, 1/8 in. heads, USA	$70.77	Set, $8.85 a burr
Hardened steel, 45 to 60 Rc	Double, hard alloy	01V034	Walter SF-5 hard alloy, 1/2 x 1 in.	$99.28	Each
Aluminum, brass, copper	Aluminum	01V054	Walter SA-5 aluminum cut, 1/2 x 1 in.	$63.86	Each

Prices checked in our catalog on Nov 10, 2026. Order minimum is 1 on every product above.

When is a single cut carbide burr the right choice?

A single cut carbide burr is the right choice when a smooth finish on general work matters more than removal speed. Drillco rates it for "a smooth finish for general purpose use on steel, cast iron and other ferrous and non-ferrous materials." Expect long, sharp slivers, so wear gloves and eye protection and sweep up after the job. On our store, single cut comes only inside seven Drillco sets, listed below.

Can I use a double cut carbide burr on aluminum?

Use an aluminum cut carbide burr on aluminum, because a double cut burr packs with soft metal and stops cutting. Drillco specifies its Aluminum Cut for "aluminum, magnesium, brass, lead and most plastics." Our carbide burr for aluminum guide covers every shape and set.

Will a carbide burr cut hardened steel?

A hard alloy double cut burr will cut hardened steel in the 45 to 60 Rc range. We carry three: 01V034 (SF-5, $99.28), 01V033 (SC-5, $107.89) and 01V035 (SL-4, $104.72). A harder grade is also more brittle, so go straight into the work and avoid side loads. Drillco also makes a Diamond Cut for "heat treated and tough alloy steels," available as a special order.

Is a double cut carbide burr the same as a diamond cut?

A double cut carbide burr and a diamond cut burr are different cuts in Drillco's catalog. Drillco says Diamond Cut gives "good stock removal at the sacrifice of finish" and that it "will reduce tool life." Some sellers use the two names for the same burr, so check the product details before you buy.

Name you see	What it means
SC, single cut	One right-hand spiral of teeth
DC, double cut, cross cut, alternate cut	Right-hand and left-hand flutes combined
NF, non-ferrous, ALU, aluminum cut	A few wide, open flutes for soft metal
Diamond cut	A separate cut for heat-treated and tough alloy steel in Drillco's catalog
Die grinder bit, burr bit, rotary file	The tool itself, in any cut

How fast should I run a carbide burr?

Run a carbide burr between 1,500 and 3,000 surface feet per minute, which is Drillco's guidance on page 15. On a 1/2 in. head that works out to about 11,500 to 22,900 RPM. Drillco's own examples match: a 30,000 RPM grinder for 3/16 to 3/8 in. burrs and a 22,000 RPM grinder for 1/4 to 1/2 in. burrs.

Head diameter (in.)	At 1,500 SFM (RPM)	At 3,000 SFM (RPM)
1/8	45,800	91,700
3/16	30,600	61,100
1/4	22,900	45,800
3/8	15,300	30,600
1/2	11,500	22,900
5/8	9,200	18,300
3/4	7,600	15,300

RPM is our arithmetic from Drillco's surface speed: SFM x 3.82 / diameter, rounded to the nearest 100.

This is a working range. Never run above the rated maximum of the burr or the grinder. Speed also changes the result. Drillco says "increasing the speed will improve finishes, while lower speeds will remove material more rapidly." Higher speeds also help keep chips from building up in the flutes.

Why does my carbide burr keep jumping or chattering?

A carbide burr usually jumps or chatters because of technique or setup, and sometimes because of the cut. Find what the burr is doing below. The second column says whether changing the cut will fix the problem.

What the burr is doing	Is it the cut?	Likely cause	Fix	Next step
Jumps or kicks on the weld	Could be	Moving the burr the same way it spins, so the teeth grab	Travel against the rotation with a light touch. If you run single cut by hand, change to double cut	01V015 double cut
Chatters and leaves a wavy surface	No	Too much shank showing, a loose collet, or a thin part flexing	Seat the shank deep in the collet and clamp close to the grind. Replace a chipped burr	Carbide burr sets
Throws long, sharp slivers	Yes	The conventional sliver chip of a single cut	Change to double cut for a granular chip	70S003DC set
Head looks silver and smooth	Yes	Aluminum or another soft metal packed the teeth	Use an aluminum cut burr and keep it off steel	Aluminum burr guide
Teeth are chipping	Check the grade	Side load, a dropped burr, or hardened steel	Go straight into the work. On 45 to 60 Rc steel, change to hard alloy	01V034 hard alloy
Stops cutting on stainless	No	The burr stayed in one spot and the stainless hardened, or the teeth are worn	Keep the burr moving. Keep a burr that has cut carbon steel off stainless that must resist rust	01V015 double cut
Surface too rough to paint	No	A burr shapes metal; finish comes after	Follow with a flap disc, then sanding discs	Flap disc vs grinding wheel
Slow going on a long, big weld	No	A burr is built for tight places	Use a grinding wheel for the bulk and the burr for corners	Grinding wheel guide

Which carbide burr set should I buy?

Buy the carbide burr set that matches your grinder's shank and the head size you use most, then choose the cut. Every set below that comes in both cuts costs the same in either one, so the cut adds nothing to the bill. All are made by Drillco in the USA and come in a moulded case. See all of them in our carbide burr sets collection.

Set	Head (in.)	Shank (in.)	Pieces	Set price	Per burr	Single cut SKU	Double cut SKU	Heads
No. 6	1/8	1/8	8	$70.77	$8.85	70S006SC	70S006DC	SA-43, SC-42, SD-42, SE-41, SF-42, SG-42, SL-41, SN-42
No. 7	1/4	1/8	8	$131.45	$16.43	70S007SC	70S007DC	SA-51, SB-51, SC-51, SD-51, SE-51, SF-51, SG-51, SM-51
No. 1	1/4	1/4	8	$158.95	$19.87	70S001SC	70S001DC	SA-1, SC-1, SD-1, SE-1, SF-1, SG-1, SL-1, SM-1
No. 2	3/8	1/4	8	$203.29	$25.41	70S002SC	70S002DC	SA-3, SC-3, SD-3, SE-3, SF-3, SG-3, SL-3, SM-4
No. 3	1/2	1/4	8	$301.11	$37.64	70S003SC	70S003DC	SA-5, SC-5, SD-5, SE-5, SF-5, SG-5, SL-4, SM-5
No. 4	1/4 to 1/2	1/4	10	$262.89	$26.29	70S004SC	70S004DC	SA-1, SA-3, SA-5, SC-1, SC-3, SC-5, SD-3, SF-3, SF-5, SH-1
No. 5	3/8 to 1/2	1/4	10	$322.51	$32.25	70S005SC	70S005DC	SA-5, SC-3, SC-5, SD-5, SE-3, SF-3, SF-5, SG-3, SG-5, SL-4
No. 11	1/2	1/4	5	$173.48	$34.70	None	70S011DC	SA-5, SC-5, SF-5, SG-5, SM-5

Prices checked in our catalog on Nov 10, 2026.

If you want to compare the two cuts on your own work, buy both No. 3 sets for $602.22. That is 16 burrs for less than the $716.32 it costs to buy the same eight 1/2 in. heads as Walter double cut singles. Drillco and Walter are different makers, so read that as a cost comparison only.

Why do some carbide burrs cost $15 and others $90?

Carbide burr prices run from about $15 to $90 for the same size because the makers, product lines and sellers differ. Budget 1/2 in. cylinders list at $15 to $20, and other named brands at about $28 to $33. We do not stock the budget tier. Walter's 01V line is its high performance range, with a published MSRP of $91.70 on the SA-5, and our price is $88.95.

If cost per burr decides it, our answer is a Drillco set at $8.85 to $37.64 a burr. Walter's published MSRP on the No. 3 set is $650.00, and ours is $301.11.

What should I use before and after a carbide burr?

A carbide burr shapes metal in tight places, so most jobs use another tool before or after it.

Step	Tool	Guide
Cut the stock first	Cut-off wheel	Cut off wheels
Take down a long weld	Grinding wheel	Grinding wheels
Break the edge of a hole	Deburring tool	Deburring tools for metal
Blend the weld	Flap disc	Flap disc vs grinding wheel
Clean stainless	Wire cup brush	Wire cup brushes
Final finish	Sanding disc	Sanding discs for metal

FAQ

Which is better, a single cut or double cut carbide burr?

A double cut carbide burr is the better choice for most metal removal by hand. Drillco credits it with faster stock removal and minimal bounce. A single cut burr is the choice when a smooth finish matters more.

What do SC and DC mean on a carbide burr?

SC means single cut and DC means double cut. The letters often end the part number, as in 70S003SC and 70S003DC.

Is a double cut carbide burr good for weld cleanup?

Yes. A double cut carbide burr is our pick for cleaning welds on steel and stainless. A 1/2 in. cylinder handles a crown and a round nose tree handles a fillet.

Can a single cut burr go in a Dremel or rotary tool?

A single cut burr on a 1/8 in. shank fits a pencil grinder or rotary tool with a 1/8 in. collet. Drillco No. 6 and No. 7 come in single cut on that shank.

Do double cut burrs work on wood?

Wood is not on the rated material lists for the double cut burrs we sell, so we do not recommend them for it.

Can you use a carbide burr in a drill?

No. A drill turns about 2,000 to 3,000 RPM, well below Drillco's working range for most head sizes. Use an air or electric die grinder.

Who makes the best carbide burrs?

We sell Walter and Drillco and have not run a brand-against-brand test. Drillco's sets are made in the USA. Choose by the cut, the head and the price per burr.

Questions about a job? Call our team at (833) 4-ETOOLS or email sales@eldoradotools.com.

Sources: Drillco Magnum Solid Carbide Burs catalog, "Carbide Bur Selection & Use," p. 15; Walter product pages for the 01V and 7000 series; Walter and Drillco product specifications; AIMS Industrial carbide burr guide for travel direction; retail listings checked Nov 10, 2026.