Search found 276 matches

by choprboy
Sun May 30, 2021 4:51 pm
Forum: Welding
Topic: Flux Core Requiring High Feed Speed
Replies: 11
Views: 447

Re: Flux Core Requiring High Feed Speed

I was saying, if you have the 10A gun, Miller considers it obsolete and doesn't list parts for it any longer. The replacement for the entire MIG gun would be the M-100 or MDX-100 now. The 10A uses a different liner than the M-10. Looking again, several third parties do actually list as having the 10...
by choprboy
Sat May 29, 2021 1:21 pm
Forum: Welding
Topic: Flux Core Requiring High Feed Speed
Replies: 11
Views: 447

Re: Flux Core Requiring High Feed Speed

Welding voltage would be wire to ground clamp (or feed stud to feed stud at the polarity bus bars in the feed mechanism) and is only live when the the trigger is depressed (so you should really pull the wire out if testing so you don't arc/accidentally weld at the same time you are measuring). But I...
by choprboy
Sat May 29, 2021 1:11 pm
Forum: Welding
Topic: Flux Core Requiring High Feed Speed
Replies: 11
Views: 447

Re: Flux Core Requiring High Feed Speed

Looking at the Challenger172 manuals... the pictures are really ratty... Here is the roll picture from the Challenger manual which shows the 2 grooves, one groove is notched, the other is smooth. You just remove the set screw and flip the roll on the shaft to use the other groove. Challenger_roll.jp...
by choprboy
Fri May 28, 2021 10:16 pm
Forum: Welding
Topic: Flux Core Requiring High Feed Speed
Replies: 11
Views: 447

Re: Flux Core Requiring High Feed Speed

I have a Miller Challenger (not the 172, the preceding plain Challenger which had 5 settings). The Challenger's have a few common problems: 1) The brushes in the drive motor wear out, causing you to have to turn up the feed rate to maintain enough drive current. 2) The feed drive shaft brass bushing...
by choprboy
Wed May 19, 2021 9:27 pm
Forum: General Discussion
Topic: Moving machinery without a liftgate
Replies: 4
Views: 2129

Re: Moving machinery without a liftgate

I built a towable engine engine hoist a while back. It works great for lifting machinery (done both my mill and lathe) and pallets into and out of the truck bed and trailers.
by choprboy
Wed Apr 21, 2021 12:03 am
Forum: General Discussion
Topic: Gear Repair.
Replies: 19
Views: 4795

Re: Gear Repair.

On #2... you would need to know the correct gear pitch to choose the cutter and it may not even be a standard size. Another option might be to use a single point cutter to cut the teeth. You can grind a tool to exactly match a good tooth profile and cut the brazed areas with that. There are several ...
by choprboy
Tue Apr 20, 2021 9:02 pm
Forum: Milling Machines
Topic: Parts availability for not so common mill/drill
Replies: 13
Views: 3007

Re: Parts availability for not so common mill/drill

Yeah, looks a lot like a Rong Fu RF-30 or similar Taiwanese manufacture mill drill from the mid 80's. Luson International seems to have been the importer and sold under various trademarks like Freeport, Millport, K-Millport, Daytona, and "National National". Looks like they started in Jan 1975 and t...
by choprboy
Sat Mar 27, 2021 12:07 pm
Forum: General Discussion
Topic: Help identifying a lathe part
Replies: 16
Views: 6997

Re: Help identifying a lathe part

OK, I'm going to go in a different direction than everyone else and say this is neither a milling nor a lathe part. To me it looks like a column for a multi-station drilling table. 2 to 5 of these would be bolted to a long cast iron table. Each would have a sliding head drill mounted to the face wit...
by choprboy
Sun Mar 21, 2021 6:00 pm
Forum: General Discussion
Topic: Name that part
Replies: 3
Views: 2901

Re: Name that part

Yep, looks like a Morse Taper milling collet. Probably a #2 which would probably have a 3/8-24 thread for a drawbar, though there doesn't seem to be any standard. Here is a #2 1/4" from LMS with a 3/8-16 drawbar thread: https://littlemachineshop.com/products/product_view.php?ProductID=1747 And anoth...
by choprboy
Fri Mar 05, 2021 8:39 pm
Forum: General Discussion
Topic: Magnetic gears?
Replies: 12
Views: 3723

Re: Magnetic gears?

Eh... its just lots of small magnets attached to wheels and staggered with the poles to always be always be in magnetic repulsion. They also make a number of highly dubious claims: "no friction" - false, there is clearly friction including friction with the air (compression in the gap) and friction ...
by choprboy
Sun Feb 07, 2021 12:04 am
Forum: General Discussion
Topic: Rotary Table
Replies: 29
Views: 7895

Re: Rotary Table

As mentioned you can by the blanks. Used to be very cheap at ENCO, but folks are real proud of them now. Cheapest I saw was on amazon. Pshaw... I shop at KBC and a few other sites now. They seem to be picking up where Enco left off. No constant stupid coupons and codes, just good prices on stuff th...
by choprboy
Thu Feb 04, 2021 9:15 pm
Forum: General Discussion
Topic: Rotary Table
Replies: 29
Views: 7895

Re: Rotary Table

I can think of 3 options.... 1) You can get Morse taper shanks for milling cutters and face mills, these have a straight section of shaft that the cutter/head would would go over. 2) You can get Morse taper to blank end adapters (for machining custom cutter/reamer holders), though the blank end may ...