Search found 21 matches

by c7z06
Wed Mar 01, 2023 8:51 pm
Forum: General Discussion
Topic: 4 x 6 bandsaw conversion for vertical work
Replies: 1
Views: 945

4 x 6 bandsaw conversion for vertical work

Since getting my 7 x 12 Jet bandsaw, I reasoned that I would probably never again be using my little 4 x 6 for horizontal cut-off work. I decided to convert it for strictly vertical cutting. I made guide adapters to take the twist out of the blade, giving me a throat depth of just over 5 inches. I s...
by c7z06
Mon Feb 06, 2023 12:13 pm
Forum: General Discussion
Topic: Harbor Freight 20 ton press mods
Replies: 1
Views: 1813

Harbor Freight 20 ton press mods

Here are some mods I made to my 20 ton Harbor Freight press: Air/hydraulic jack, table winch, guide rollers, casters, pinned table plates, release knob, grade 8 frame bolts, finger brake, support pin shaft collars. Also, I have found it obnoxious to give up my ability to use my press when it is occu...
by c7z06
Sun Dec 25, 2022 4:39 pm
Forum: Welding
Topic: DIY Welding Positioner
Replies: 16
Views: 5957

Re: DIY Welding Positioner

Three clamping shaft collars and some scrap steel bar make for a super sturdy adjustable hand rest.
hand rest.jpg
by c7z06
Sat Dec 24, 2022 6:35 pm
Forum: Welding
Topic: DIY Welding Positioner
Replies: 16
Views: 5957

Re: DIY Welding Positioner

First attempt with the positioner. Grounding setup worked great!
1st attempt.jpg
by c7z06
Thu Dec 22, 2022 11:14 pm
Forum: Welding
Topic: DIY Welding Positioner
Replies: 16
Views: 5957

Re: DIY Welding Positioner

Bill Shields wrote: Thu Dec 22, 2022 10:28 pm And it all sits on a wood (insulated) sheet?
I didn't necessarily plan it that way, but yes, I guess the machine is insulated from the support stand.
by c7z06
Thu Dec 22, 2022 10:22 pm
Forum: Welding
Topic: DIY Welding Positioner
Replies: 16
Views: 5957

Re: DIY Welding Positioner

Electronics consist of a 12 volt dc gear motor driven by an 8 amp Radio Shack power supply and a variable speed control I picked up on Amazon.com. An on/off foot pedal frees up both hands. A variety of speed ranges are possible by switching out timing pulleys and belts. controls.jpg timing pulleys.j...
by c7z06
Thu Dec 22, 2022 5:44 pm
Forum: Welding
Topic: DIY Welding Positioner
Replies: 16
Views: 5957

Re: DIY Welding Positioner

How do you keep from arcing the bearing in the rotary table? Ground is connected to a spring loaded brass rod (brush) that rides against the edge of the table on the work side of the bearings. The bracket that holds the rod is insulated from the rest of the unit via nylon bolts, with nylon washers ...
by c7z06
Thu Dec 22, 2022 12:57 pm
Forum: Welding
Topic: DIY Welding Positioner
Replies: 16
Views: 5957

DIY Welding Positioner

I had no luck trying to sell an old Troyke 9" rotary table, so I combined it with some drill press parts to make a welding positioner:
0 degrees.jpg
45_degrees 1_3mb.jpg
90 degrees 1mb.jpg
w vise 750kb.jpg
by c7z06
Fri Jul 15, 2022 12:36 pm
Forum: General Discussion
Topic: How I built my CNC plasma table (and bike cutouts)
Replies: 0
Views: 8757

How I built my CNC plasma table (and bike cutouts)

If anyone has an interest in how I made my CNC plasma table, and the bike cutouts, I have a new website that explains it in some detail. I'm still working on it, but it's up and running at: https://cncplasmadesign.com No ads - not trying to sell anything. arc voltage thc on 2x2.jpg All 19 bikes TT n...
by c7z06
Thu Feb 10, 2022 5:36 pm
Forum: Milling Machines
Topic: Quick and Dirty Power Drawbar for a Bridgeport Mill
Replies: 4
Views: 6354

Quick and Dirty Power Drawbar for a Bridgeport Mill

Until I can decide what kind of power drawbar to buy, I came up with this approach to attaching and removing R-8 tooling. A Milwaukee right angle attachment and Milwaukee right angle impact driver provide just the right amount of torque to easily seat and unseat my tooling. If I don't overdo it when...
by c7z06
Sun Feb 06, 2022 1:38 pm
Forum: General Discussion
Topic: Pantograph Plasma Shape Cutting Machine Build
Replies: 0
Views: 9220

Pantograph Plasma Shape Cutting Machine Build

Pantograph Plasma Shape Cutting Machine Build Today, 01:31 PM I fabricated this pantograph shape plasma cutting machine for duplicating steel brackets and other hardware. A variable speed knurled rotor moves around an overhead mounted template. The plasma torch tip, directly below, duplicates the sh...
by c7z06
Thu Jan 27, 2022 11:29 pm
Forum: Home Shop CNC & 3D Printing
Topic: CNC Plasma Cut Vintage Motorcycles
Replies: 8
Views: 8203

Re: CNC Plasma Cut Vintage Motorcycles

The dxf files created by the drawing program (in this case CorelDraw) are standard AutoCad format. Most CNC systems capable of converting dxf to G-code should be able to digest them.