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General Tools Heavy-Duty Automatic Center Punch #78 - Nail Punch Tool to Mark and Scribe - Machinist Tools

General Tools Heavy-Duty Automatic Center Punch #78 - Nail Punch Tool to Mark and Scribe - Machinist Tools

Q: Has anyone tried breaking a 1/4" glass plate with this? Did it work?

If you wish to break plate use a hammer, this will work on tempered glass if any thickness

Q: Anyone use one of these to extract broken bolts? Is it strong enough to get a punch for a bit? Looking to remove a bolt inside my engine block.

I dont think john p actually ever tried this. Dont know about the cheaper utility version but the big #78 which Ive had for 15 years will put a divot in anything short of a broken drill bit. Ive removed broken taps with it a few times by softening the metal around the tap then repeatedly punching the tap in reverse. This tool has amazing power. That said, mine misfires about every half dozen clicks but doesnt bother me considering how well it works.

Q: Do i need any machine to use this or take off the bike bolts

I dont understand the question,this is a center punch,not a take off tool.I used mine once,and the tip broke off.It was a piece of junk,so I don't know.If the bike bolts are rusted,or welded,on it seems like to me you are going to have to cut em off.

Q: Would this work well to get a starter dimple for unibit/step bit when going thru metal studs or panel boxes?

It might. It works better if you drill a starter hole with a twist drill first. Usually the step-bit and unibit drills don't have enough of a point to start in the dimple that the center punch makes.

4.3/5

Product ID: 276786593

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Details

Material
Heavy Duty
Colour
Black
Brand
General Tools
Item weight
0.3 Pounds
Operation mode
Manual

🔩0.08 in precision tip

⚙️Replaceable hardened steel point

🛠️Adjustable spring tension

Frequently Bought Together

General Tools Heavy-Duty Automatic Center Punch #78 - Nail Punch Tool to Mark and Scribe - Machinist Tools

General Tools 78P Replacement Point for General Tools 78 Heavy Duty Steel Automatic Center Punch

General Tools 88CM Tungsten Carbide Scribe and Magnet, Copper, Replaceable Tip

Description

⚡ Punch Perfect Marks Like a Pro – No Hammer Needed!

ERGONOMIC KNURLED GRIP - Secure handling reduces slippage and enhances safety during use.
CUSTOMIZABLE IMPACT FORCE - Adjust spring tension for light or heavy strokes tailored to your project.
BUILT TO LAST RESIST RUST - Heavy-duty steel body with black oxide finish for durability and longevity.
PINPOINT ACCURACY EVERY TIME - Conical steel tip ensures slip-free, exact marking on wood and metal.
EFFORTLESS ONE HANDED OPERATION - Automatic spring-loaded punch eliminates the need for a hammer.

The General Tools Heavy-Duty Automatic Center Punch #78 is a precision hand-powered tool featuring a replaceable hardened steel tip with a 0.08-inch diameter for exact hole marking. Its adjustable spring tension allows for customizable impact, while the knurled grip ensures secure handling. Designed with a rust-resistant black oxide finish, this 5.63-inch steel punch is ideal for machinists, metalworkers, and DIY professionals seeking reliable, hammer-free marking on wood and metal surfaces.

Specifications

Manufacturer	GE Lighting
Part number	78
Item Weight	136 g
Item model number	78
Color	Black
Style	Heavy Duty Steel
Material	Heavy Duty Steel
Power source type	Hand Powered
Item Package Quantity	1
Number Of Pieces	1
Cutting Diameter	0.08 Inches
Included components	Unit^Instruction Guide
Batteries Required?	No
Item diameter	0.08 Inches

Have a Question? See What Others Asked

Has anyone tried breaking a 1/4" glass plate with this? Did it work?

Anyone use one of these to extract broken bolts? Is it strong enough to get a punch for a bit? Looking to remove a bolt inside my engine block.

Do i need any machine to use this or take off the bike bolts

Would this work well to get a starter dimple for unibit/step bit when going thru metal studs or panel boxes?

Reviews

4.3

All from verified purchases

P**1

good

17.10.2020

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