How far from the edge of the metal can you punch the hole?

There are two different versions of this tool. One with a 3/16" hole punch and one with a 5/16" hole punch. I have both so can give you the answer for both. The unit with the 3/16" hole punch makes a hole 1/8" from the edge. The unit with the 5/16" hole punch makes a hole 1/16" from the edge. I hope that this helps. I am very satisfied with my tools.

Any way to modify the throat depth on the punch side? It's too shallow for my liking.

Nope, you have what you get. They are set up for a specific meatal thickness and if you try to use heaver material it will bend the shaft and ruin the tool. I tried it and had to buy a new one.

Can the punch be flipped to be positioned at the end of the tool?

Not sure if you meen at a 90 degree angle, but no. One side crimps and the other punches holes

How many gallon compressor is recommended?

It will run off just about any compressor. If you are going to be doing a lot of crimping on long panels, you might want something with a larger tank, but it will run off a pancake compressor. I have a 30 gallon tank on my home shop compressor, and, on the small patch panels I've used it on, it never got to the point where the compressor kicked in.

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Astro 605ST Straight Type Punch/Flange Tool

Astro 605ST Straight Type Punch/Flange Tool

Product ID: 10542253

Details

Brand
AP Astro Tool
Color
Black
Item Weight
2.6 Pounds
Material
solid
Product Dimensions
2.5"L x 2.5"W

🔄Rotating head for versatile angles

⏱️Cuts metal fabrication time by 50%

⚙️Precision single-punch lever action

34.37 OMR

Duties & taxes included

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Description

⚡ Punch Perfect, Work Faster — Own the Metal Fabrication Game!

360 ROTATING HEAD - Work comfortably at any angle—no awkward positioning needed.
NO BUMP LAY WELD FINISH - Create offset crimped edges that ensure smooth, professional welds every time.
QUICK CHANGE 5 5 MM PUNCH - Replace punches in seconds to keep your workflow seamless and efficient.
LIGHTWEIGHT DURABLE BUILD - Engineered for all-day use without fatigue, built to last through tough jobs.
EFFORTLESS PRECISION PUNCHING - Every lever pull delivers a flawless single punch or flange crimp with unmatched control.

The Astro 605ST Straight Type Punch/Flange Tool is a lightweight, manually operated metalworking tool featuring a rotating head and a quick-replace 5.5mm punch. It delivers precise single punches or flange crimps with every lever pull, forming offset crimped edges for smooth welds and reducing metal fabrication time by half.

Specifications

Asin	B0066LMK7S
Best Sellers Rank	#68,926 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #1 in Power Straight Grinders
Brand Name	AP Astro Pneumatic Tool Company
Color	Black
Customer Reviews	4.5 4.5 out of 5 stars (399) 4.5 out of 5 stars
Global Trade Identification Number	00745227016075
Hole Count	1
Included Components	1
Item Dimensions L X W X H	2.5"L x 2.5"W x 9.5"H
Item Weight	2.6 Pounds
Manufacturer	Astro Pneumatic Tool Company
Material Type	solid
Model	605ST
Operation Mode	Manual
Part Number	605ST
Pin Hole Diameter	5.5 Millimeters
Sheet Count	1
Unit Count	1.0 Count
Upc	745227016075 013222113700
Warranty Description	No_warranty

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