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General Tools & Instruments 55 Heavy Duty Circle Cutter. Adjustable 1-3/4 Inch to 7-7/8 Inch

4.5 out of 5 stars 108 customer reviews
| 21 answered questions

List Price: $32.19
Price: $25.16 & FREE Shipping on orders over $35. Details
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7-7/8" Heavy Duty
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  • Designed for professional use, the Heavy Duty Circle Cutter will make clean cuts from 1-3/4 to 7-7/8 inch diameter
  • The tempered steel body features marked graduations on the beam for fast measurement and application
  • #55 Heavy Duty Circle cutter is designed with a 1/2 shank for drill press use only; Maximum safe speed is 500 RPM
  • This round shank circle cutter is great for making smooth cuts through most materials, including wood, composite, sheet metal and more; Shank is 1/2 inch round
  • All adjusments are made with a hex wrench which is included; Replacement blade is General Tools Model # 55 Blade, replacement drill is General Tools Model # 5/6/55 Drill
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30 new from $21.65 1 used from $21.03
$25.16 & FREE Shipping on orders over $35. Details In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

  • General Tools & Instruments 55 Heavy Duty Circle Cutter. Adjustable 1-3/4 Inch to 7-7/8 Inch
  • +
  • Replacement 1/4" Cutting Blade
  • +
  • General Tools & Instruments 5B Standard Circle Cutter, Adjustable 1-Inch to 6-Inches
Total price: $51.77
Buy the selected items together

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Style: 7-7/8" Heavy Duty

Product Description

Style: 7-7/8" Heavy Duty

Product Description

Designed for professional use, the Heavy Duty Circle Cutter will make clean cuts from 1-3/4 to 7-7/8 inch diameter. The tempered steel body features marked graduations on the beam for fast measurement and application. #55 Heavy Duty Circle cutter is designed with a 1/2 shank for drill press use only; Maximum safe speed is 500 RPM. This round shank circle cutter is great for making smooth cuts through most materials, including wood, composite, sheet metal and more; Shank is 1/2 inch round. All adjusments are made with a hex wrench which is included; Replacement blade is General Tools Model # 55 Blade, replacement drill is General Tools Model # 5/6/55 Drill.

From the Manufacturer

Works like an adjustable hole saw. This heavy-duty circle cutter most preferred by professionals. 1/2 round shank for drill press use. Replaceable 1/4" high-speed tool steel bit and replaceable 1/4" pilot drill. Capacity 1-3/4" to 7-7/8".

Product Information

Style:7-7/8" Heavy Duty

Technical Details

Part Number 55
Item Weight 11.8 ounces
Product Dimensions 5.5 x 4 x 1 inches
California residents Click here for Proposition 65 warning
Item model number 55
Size 7-7/8" Heavy Duty
Style 7-7/8" Heavy Duty
Power Source corded-electric
Item Package Quantity 1
Number Of Pieces 1
Batteries Required? No

Additional Information

ASIN B00004T7P1
Customer Reviews
4.5 out of 5 stars 108 customer reviews

4.5 out of 5 stars
Best Sellers Rank #10,720 in Home Improvements (See top 100)
#2 in Home Improvement > Power & Hand Tools > Power Tool Parts & Accessories > Shaper Accessories > Cutters
Shipping Weight 14.4 ounces (View shipping rates and policies)
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Date First Available February 4, 2004

Warranty & Support

Warranty, Parts:Parts
Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

Customer Reviews

Top Customer Reviews

Style Name: 7-7/8" Heavy Duty Verified Purchase
PRODUCT REVIEW:
I used this to cut plastic rings (7 1/2" outside diameter, 6" inside diameter) out of 3/4" thick, heavy kitchen cutting boards to be used as surrounds for marine speakers. This required two cuts which sounds easy but I wish I had this advice in retrospect. Before I begin with the advice, let me say this circle cutter is EXCELLENT! It's HEAVY DUTY, SHARP, but does make an ungodly whirlwind of shavings from whatever your cutting so lay a big plastic tarp down before you start your first cut and be sure to limit your drill press to no more than 500 RPM. Now the cutting advice.

IMPORTANT CUTTING TIPS:
First, consider the width of the blade. When you're cutting OUTSIDE a circle-shaped line be sure to ADD the blade width to the width of this cutter. When you're cutting INSIDE a circle-shaped line, be sure to SUBTRACT the width of the blade from the circle you want to cut. If you forget this or do this backwards then your circle will be 1/4" larger (or smaller) than you intended.

Second, select your cutting method and consider carefully whether your cutting RINGS or CIRCLES. You'll be able to cut a perfect RING with this tool but if you're cutting CIRCLES you'll have to choose between having small holes in the middle of your work product or a slight lip on the outside edge of your circle.

WHY DO I NEED TO CHOOSE - I JUST WANT TO CUT A SIMPLE CIRCLE?!
The reason you cannot have a perfect circle cut is because it's impossible to secure both the INSIDE and the OUTSIDE of a circle at the same time using this type of tool and a drill press.
Read more ›
4 Comments 40 of 40 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Style Name: 7-7/8" Heavy Duty Verified Purchase
Update (November 10, 2011):

It has been 9 months since I purchased this item and it just now started smoking and burning (I've cut about 20 large holes in walnut, maple and pine) - so I'm sure the problem is that the blade is getting dull. Not a problem with the product, just a problem with the user not keeping it sharp. I stick to my original review, for the price, this is a good product.

Original review:

I needed to cut several circular holes in a weather station project - read all the reviews and decided, for the price, that I would give this Circle Cutter a try. Here is the good and the not so good:

Pro:
1. Right Price.
2. Quick Delivery.
3. Well made (sturdy), should last for years and years (may have to sharpen).
4. Holes were perfectly circular, smooth and easily cut through 3/4" walnut veneered plywood - no chipping at all.
5. Easy to adjust.

Con:
1. No instructions to speak of - didn't even mention what speed to run my drill press. Had I not noticed, in the Amazon description, that max speed was 500 RPM, I might have let it run a bit faster. As it was, I did notice the limitation and set up my drill press to run at 450 RPM - cut smoothly with no burning.
2. The scale is inaccurate - you will have to use a ruler/tape measure to adjust the size (diameter) you want to cut.

All in all, for the price, this is a great product and I'm pleased with my purchase. I would have given it 5 stars but for the inaccurate scale - this is something that should have been right.

Note: I read the other reviews and noted at least one that mentioned burning - I'll bet this was because he didn't note the 500 RPM limitation. I had zero burning.
1 Comment 15 of 16 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Style Name: 7-7/8" Heavy Duty Verified Purchase
I bought this tool to cut a 4" diameter hole in 3/4" MDO plywood for a dust collection port, After reading reviews on several circle cutters to include the light weight version of this tool by General, I decided on the heavy duty cutter, since I would be cutting almost to the max depth allowed by this cutter. I slowed my drill press down to 360 rpm and it performed flawlessly without chatter.
The trick to a clean hole is to cut half-way through then flip the work piece over and cut from the other side using the hole from the pilot drill bit for alignment.

If you intend to cut material with thickness of 3/8" or less, I think the light weight version of this cutter would work fine. However, for thicker material I would go with the heavy duty cutter.

The cutting blade is thick enough to sharpen on a whetstone or a diamond plate when it dulls, just like a chisel blade.

The cutter is well worth the nominal price and far cheaper than hole saw blades. Just remember, the cutter must be used in a drill press with a max speed of 500 RPM, and if it starts to smoke, slow it down. If it still smokes the blade is dull.

The cutter is well made and the blade can be sharpened like any chisel or plane iron.
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Style Name: 7-7/8" Heavy Duty Verified Purchase
Does the job. Makes nice, smooth cuts. Note that it must be used in a drill press.
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Style Name: 7-7/8" Heavy Duty Verified Purchase
First the obvious. This is not to be used with a hand held drill although I am sure there will be those who either miss that or will attempt it anyway. If you are ok with a crappy hole that takes an hour to drill but much less time to remove most of the flesh from your hands, then give it a shot. In a drill press, as it is supposed to be used it is a great hole cutter. Setting the drill press at 350 rpm and first starting on the back of the piece and then continuing after three quarters of the way through on the front, I could not be happier. I drilled a 4" hole for a dust port for a router table through 3/4" melamine and I was done and attaching the back of project in two minutes. The drill bit and the blade are both replaceable as well as can be resharpened when needed. Allen screws make adjustment a piece of cake. Read the directions and... did I say don't try this cutter with a hand powered drill?
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General Tools & Instruments 55 Heavy Duty Circle Cutter. Adjustable 1-3/4 Inch to 7-7/8 Inch
This item: General Tools & Instruments 55 Heavy Duty Circle Cutter. Adjustable 1-3/4 Inch to 7-7/8 Inch
Price: $25.16
Ships from and sold by Amazon.com
Want to discover more products? Check out these pages to see more: circle blade, circle bit, adjustable hole cutter, metal hole cutter