In article As usual you're a lying cock smoker. In a Feb. 15 union vote, Boeing workers in North Charleston, almost three-to-one margin. The tally was 731 for the International Association of ... Read more »
I've bought 6061 T6511 from several vendors. Is there a spec I can look up for what what should be considered acceptable? 1. One consistently provides out of flat stock. Sometimes more than .0... Read more »
lathe runs for about 30 mins then starts to slow down within 30 seconds it stops as though a brake has been put on , leave it for 20 mins then its ok again until the next 30 mins very frustrating Read more »
You need the zinc, or zinc bearing solder, not flux for soldering aluminum. Heating the base material and not the solder is standard for any process except maybe wave soldering. Source: visiting ... Read more »
This is really good: http://www.gutenberg.org/files/64504/64504-h/64504-h.htm Read more »
Hi Jim - starting topic's own thread... Jim Wilkins writes: Hi Jim Can you sketch? That is always helpful. I do that even when it seems we all agree, as it can be amazing how a sketch reveals ... Read more »
After having gone to great lengths to forge to rough shape , bandsaw to closer shape , and do 75% of the machining on a piece of 4140 steel for the body of a small screwless vice ... I noticed... Read more »
I bought it off of eBay. https://www.flickr.com/photos/27532210@N04/? Does that look like 6061 aluminum? Maybe buying a longer piece would expose more of the name. No big deal, unless maybe I buy... Read more »
Hi everyone I've continued to burn the midnight oil on this. The combination of events, disappearing inwards into this fixation (?) at this time of the covid19 pandemic in its first winter (Northe... Read more »
Ideas to get a controlled temperature of around -40C (also -40F) in a test sample? Robustly by physics: 100C -> boiling water 0C -> ice -17C -> brine-ice slurry (?) ??? -40C ??? -80C -> cardi... Read more »
I bought the RF-30 mill. It was cheap enough, but I was hesitant about whether I would get any use out of it, but then I figured its got to be better than either of my drill presses and the price ... Read more »
I have a Weldon fixture for sharpening Weldon countersinks. It is in excellent condition and I'm asking $250.00. Location, US, NC. Will ship anywhere. Please e-mail for details, picture. I have clo... Read more »
I have a harbor freight 7x10 and I notice i cannot get a straight cut parallel to the axis of the workpiece. At the top or bottom varies by atleast .01 and as much as .02 over a distance of two inche... Read more »
Is that the same taper or not. can I use it in a NMTB30 quick change spindle. An auction is coming up... Read more »
Got a Hobart 250 amp Beta Mig from Craigs list for 100 bucks. Owner had two, and didn't know why this one stopped working. Got it home and it turns out it was just a broken wire on one of the contro... Read more »
I need to lap the ID of an aluminum piece out about half a thousandth. It is heavily annodized, and has a matte, frosted finish. I think the reason it is undersized is that the annodization built... Read more »
Hello, I have just bought a Welch 1402 second hand which I want to use to degas silicone and urethane/resin. 1) Where do you put the oil? (crazy question I know) 2) what oil is acceptable to use I ha... Read more »
I need to lift an 1,100 lb mill up in the basement about 3 feet to slide a stand under it. Both floor space and vertical clearance are limited and an engine hoist won't work. I'm planning on usin... Read more »
I have an old Dayton 2Z543 hand held 115V spot welder. The tips screw into the tongs, but the threads are stripped. Been using it that way for a decade, but it's got to the point that I'm burning hol... Read more »
I'm doing some work on my South Bend Heavy 10 cross slide. I noticed that the oil hole that lubes one of the feed screw bearings is not aligned with the hole on the feed screw assembly. When the fe... Read more »
Polytechforum.com is a website by engineers for engineers. It is not affiliated with any of manufacturers or vendors discussed here. All logos and trade names are the property of their respective owners.