Welder World Blog

Posts Tagged ‘Spot’

• 8mm drill bit for spot weld drill
• Made of High Speed Steel Cobalt

Product Description
Features and Benefits:

• 8 mm drill bit

This 8 mm drill bit is for a spot weld drill.

Astro Pneumatic 1721 8mm Drill Bit For Spot Weld Drill

I build this thing just from scrap I happened to see around the house

Watch in HD! Project inspired by Fritz9111 www.youtube.com Music by Konstantin (KostiX) of Prototeep hypnotica.bandcamp.com I’ve finally completed the design of my spot welder, this video attempts to answer most of the questions I’ve received via email to date (including the one about “underwater” cutting!) I’m just cleaning up the firmware, which is an absolute mess. Check out the articles page on http within a week or so for updates

A spot welder using a re-wound transformer. 1.4v @ ~1100amps.

• 6-Inch tongs lock firmly onto materials
• Works with mild, galvanized or stainless steel
• Welds uncoated stock as thick as 1/8-Inch
• Rated output: 1.5KVA at 50-Percent duty cycle
• Dimensions: 1-Inch by 6-Inch by 4-1/2-Inch

Product Description
6″ tongs lock firmly onto materials/ Use this spot welder for any of your projects!

Speedway Series 1404 110-Volt 30-AMP Spot Welder

This is a bunch of photos and clips of us trying to put a battery tab spot welder together from junks. Please be careful working with the capacitor and transformer in the microwave.

• Air hose I.D. Size: 3/8-Inch (10mm)
• Avg. air consumption: 4cfm
• Air pressure: 90-120PSI
• Air inlet thread NPT: ¼-Inch
• Overall length: 8-3/4-Inch (222mm)

Product Description
Item #: AST1756.

Features & Benefits:

• 2 speed
• Adjustable depth stop which allows you to drill out just the spot weld and not the panel beneath
• Drills out the entire spot weld, eliminating the need for grinding

Kit Includes:

• 1 -Air Spot weld drill
• 1 -5.5″ Deep clamp (Bigger and Better)
• 4 -Drill bits (2-8mm, 2-6.5mm)
• 1 -End line oilier (3000)
• 1 -3 Way swivel (3SB10)
• 1 -Plastic blow molded case

Specifications:

• Drill bit size chuck cap: 5/16″
• Free speed: 2,000RPM
• Overall length: 8-3/4″ (222mm)
• Air inlet thread NPT: 1/4″
• Air hose I.D. Size: 3/8″ (10mm)
• Avg. air consumption: 4cfm
• Air pressure: 90-120PSI

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Astro Pneumatic 1756 Deluxe Air Spot Weld Drill Kit with Deep Clamp

More info and the schematic at frikkieg.blogspot.com CHECK OUT VERSION 2 solid state dual pulse welder http This started when both the batteries of my drill died and not willing to pay the outrages amounts for new batteries I started to look around for a better alternative. I realized that the guys that were building their $100 welder was on the right track but some did not really understood the math involved to figure out the current and discharge times of these machines.Inspired by these guys at endless-sphere.com I started from scratch and designed this welder because I could not find any good schematics on the internet. It took me 3 months and here it is::::::

I had a dead microwave oven transformer so i sawed off the secondary and replaced it with 2 turns of very thick wire. I then made a simple yet very effective spot welder.