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The most recent discussions

Physics Teacher MELTS Back of Car With Solar Oven


January 25, 2020, 3:25 pm

Here's Why You Shouldn't Leave a Giant Parabolic Mirror in Your Car on a Sunny Day Gizmodo - July 25, 2018 -- https://gizmodo.com/heres-why-you-shouldnt-leave-a-giant-parabolic-mirror-i-182785882... Read more »

Is this end mill really worth 90 dollars?


January 25, 2020, 2:23 pm

Is this end mill really worth 90 dollars? Is there an alternative? So far its the only one like it I have found. Carbide, 1/4 radius, 1/8 pilot. I have bought three of them. Would have only ... Read more »

Re: Just got banned for 30 days on Facebook again...


January 23, 2020, 1:41 pm

On Thu, 23 Jan 2020 01:49:44 -0800, Gunner Asch The fools probably think that's a type of evil gun, not realizing it's an ammunition caliber. (Self loading, oooh, makes me shutter in fear.) Guns ... Read more »

0.475" ROD


January 23, 2020, 2:38 am

Somewhere along the way I acquired a little bit of stainless rod. I think it was an Ebay purchase a very long time ago. Its some of the first metal I purchased specifically for getting into mac... Read more »

CRC TrueTap HD


January 21, 2020, 11:39 pm

but who knows how real they are ... anyway , I've gotten tired of burning up drill bits so I bought a couple of pint bottles . Probably last me the rest of my life if it's as good as the reviews ... Read more »

What Alloy - Bottle Openers


January 20, 2020, 5:39 pm

What alloy aluminum are bottle openers made from. There are a couple styles. One is quite thick, and just due to its mass it should last atleast a little while. The other is pretty thin. No t... Read more »

U channel and squire tube which one is strong


January 18, 2020, 5:32 am

8 cm wide by 3 cm U Channel and 3 x 3 inch x 2 mm tube Read more »

A 'DOH!' Moment


January 11, 2020, 3:23 pm

As most of you know by now I make molds for a pretty small niche market. Most of those molds are two piece (sometimes with inserts and other things) that are placed together and held with clamp... Read more »

Re: How to make iron filings?


January 10, 2020, 6:18 pm

Run magnets through sand, by your windowsill(or any place that collects a lot of dust, really)and try your best to remove the filings from the magnet. It ain't easy! Read more »

Gun Drilling - Again - Expanded


January 5, 2020, 5:50 pm

Ok, my previous deep drilling operations went off pretty well. Carbide 3 flute drills worse used on a couple of them. One to start holes for a hand ground split point, and the smaller hole with... Read more »

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The best rated discussions

Help with adjustable reamer

rating: 5

Although I'm a novice to metalworking I recently decided to build a project out of aluminum and bought a set of inexpensive adjustable reamers when I found that I couldn't drill a hole accurate enoug... Read more »

How to increase the current carrying capacity of Titanium Anodizing Racks

rating: 5

Hi, We are a new anodizing rack manufacturer. Some of my customers want to use titanium anodizing racks but they still want the high current carrying capacity of aluminum racks. How can we make such ... Read more »

8 inch I-beam - how much will it hold?

rating: 5
  [ 2 ]

One of the projects involves both re-doing the garage and lifting a ford 4-cyl motor out of a car. There's a fellow selling an I-beam locally, 13 feet long, 8 inches deep, 4 inches wide (no web thic... Read more »

Pictures of Powermatic 1150 drill press

rating: 5

It has some kind of a foot pedal also. Hopefully for raising and lowering the table. I do not have possession of it yet. http://igor.chudov.com/tmp/Powermatic-1150-Drill-Press/ Read more »

South Bend Cross Slide

rating: 5

Hi All, The cross slide on my 9 inch south bend advances .002 per mark and I would like to have it so that it advances .001 per mark. Anyone have one like that that wants to trade screw, nut, and co... Read more »

Bridgeport table feed

rating: 5

Help! I need wiring diagrams and info to repair my J2 Varispeed table powerfeed. I think it is a 6F-B powerfeed, I could be wrong. It has a Boehm motor (4640) and the only numbers on the front cont... Read more »

Tap for myford spindle

rating: 5

I bought a Bison backplate and 6 jaw chuck for my Myford lathe. The Bison back plate has burrs on it and and will not thread onto my spindle. I even tried a second one and it has the same problem. In... Read more »

Endless lathe chips (re-adjusted the clutch on a Clausing 6913 lathe)

rating: 5
  [ 2 3 ]

I finally got around and re-adjusted the clutch on the Clausing 6913 lathe. (13x48). The clutch was previously slipping and I could only make the lightest of cuts. Now, the clutch no longer slips ... Read more »

Spindle Bearing Oil for Toolpost Grinders

rating: 5

I know there are some folks here that have considerable experience with high speed parts and lubricating oils. I anyone has recommendations for oils with properties suitable for high speed bearings... Read more »

ON TOPIC: Welded joints are usually stronger than the surrounding material?...

rating: 5

Is that typically true? For example... A typical bike fork weld, where the two curved fork pieces meet the head tube. If immense pressure were put on one of the forks, would the fork tube bend be... Read more »

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