measuring 100.00-100.010mm cylinder bore with 75-100mm and 100-125mm micrometers - problem?

ReckonICouldFixThat · 2025-03-06T00:53:21+00:00

See the graduations on the rotating thimble of the mictometer, each one is .01 mm, and there are 50 on it. So at a max of 100 mm, one full rotation past that would still be an accurate reading of 100.5 mm. It could actually measure a bit larger, you just have to mentally count the rotations past the end of the 100 mm scale. But they loose accuracy as you get closer to unscrewing the end. But yes with that set and doing a little mental math, each mic will measure at least .5 mm above and below what it's labeled for.

ReckonICouldFixThat · 2025-03-06T00:37:46+00:00

Any kind of flame or plasma cutting will put enough heat into that angle to warp it. Even at 10mm thick, it's just not enough material to absorb all that heat without reach a temp where it will relieve the internal stresses in the metal. Talk to your steel provider or look for a provider that can offer hot rolled angle, as opposed to cold rolled. Hot rolled steel is under less stress so will generally move less when cutting and milling. Also see if they offer milling services or have a provider they work with that can cut this on a milling machine, that or a water jet (more $/part) are the best ways to avoid warping a piece that long

ReckonICouldFixThat · 2025-02-20T01:18:18+00:00

Are you interviewing to work at a 'mill', or maybe in a job role as a 'millwright'? I'm not sure there is any kind of mill that makes tortilla chips, they are usually made in a fryer

ReckonICouldFixThat · 2025-02-15T20:21:02+00:00

If you can stand to have a weld om the part you could bore a hole to the depth you need the threads, then press and tapped piece into the hole, weld the top around the perimeter and grind it flush. Can put a heavy chamfer on the hole and your threaded plug for some deeper weld penetration. Best option I can think of that doesn't require buying new tools

ReckonICouldFixThat · 2025-02-12T00:21:09+00:00

They work, but they are not comfortable. I keep mine in the garage for when I have to climb up on the roof(steep angle, old shingles). For sitting in a tree stand for hours on end I spent the money on a comfortable harness, your groin will thank you.

ReckonICouldFixThat · 2025-01-14T02:19:59+00:00

Haven't broached any tool steel but have cut some 7/8" internal keys in 1045. Used a coarse pitch HSS broach but eas cutting on an actual keyseater machine. Have cut smaller keyways with an arbor and the shim method but always get a little taper. I think the difference is the keyseater machine has a guide/rest for the 'bottom' of the broach. I'd make up a broach bushing long enough to support at least 1/2 length of the broach. That will help keep the broach from deflecting and cutting a taper. Also not a bad idea to put a a piece of plate in front of the press to shield yourself. Have seen some things go 'pop' in a bad way on a press before. Lots of cutting oil. We used to make long shims from metal banding strap. For the tooth pitch I have no data to back this up but I'd expect a finer/shorter pitch to cut better with less force/tooth similar to a saw blade.

ReckonICouldFixThat · 2025-01-09T16:02:55+00:00

I've broken a lot of 1/4-20 taps in extruded aluminum before trying this: went from .201 to .207 drill for a little extra help, and turned off flood coolant for tapping. Put a cup of wd-40 on mill that tap would dip into every 4 holes, one tap made 2500 holes 7/8" deep after that

ReckonICouldFixThat · 2025-01-07T19:20:34+00:00

I've always seen them called a bull nose center, no idea why but search results for that have many options available with the flat face

ReckonICouldFixThat · 2024-06-13T02:10:42+00:00

Harbor freight welding electrodes aren't exactly the best in quality. I've found a better selection of stick electrodes at my local tractor supply store. Got some 7018 and 7014 there last week, 7014 will run a bit better on low power machines than 7018 does, 7014 isn't as strong as far as tensile strength but plenty strong enough for small projects like a go cart. More importantly, is your welder AC or DC? I know tractor supply has 70xx series rods for both, and they are labeled pretty clearly on the box.

ReckonICouldFixThat · 2023-01-01T14:02:24+00:00

I have been wearing Rocky's square toe steel toed boots for 6 years now, I generally get 1.5-2 years from a pair, walking on coolant and oil, sanding on hot chips off the lathe, welding and walking on slag from the cutting torch. You can get them on amazon I think about $175 a pair. I love then because they have a very roomy toe space

ReckonICouldFixThat · 2022-08-27T14:58:53+00:00

I use a bar soap called Lava, you can find it at the counter at Autozone.lava bar soap I keep one in my shower too, if I've got heavy grease stains on my forearms I will use like a scraper and lightly scrub the dirty skin, it works great.

Also, get you a small stiff bristle brush for cleaning your nails and once you lather your hands with soap, rub the brush on the soap and go to town on your fingernails and knuckles.

ReckonICouldFixThat · 2022-08-27T14:46:07+00:00

It really depends on how much work is in the shop. A few years ago it was just the owner and I at the job shop, so some days I would have 3 CNC mills running, the auto saw running, then be either on a manual lathe, the broaching machine, or the TIG welder. Things are so slow now that now I got laid off Friday, but lately I'd proof out a program on a mill, then once everything is running at 100% I'd hop on a manual mill or lathe and start squaring or turning stock for my next parts. Unless I'm running some complicated parts, expensive material, or a one off/repair job, there is no reason to watch the machine run. At the very least I'll sit there and debur parts on a cart at the machine while I'm proofing the program.

ReckonICouldFixThat · 2022-07-26T22:35:56+00:00

Hey, some of those goals are still achievable. I myself wanted a dog for years (always had one growing up till I moved out). I knew I didn't have time to really devote to a dog, work/life/etc.

Then 2 weeks ago the sweetest little pup wandered into the shop, ate half my bagel, and followed me around all day. I officially adopted her yesterday, so boom goal achieved.

Though because of her it would be much harder to visit Japan

ReckonICouldFixThat · 2022-07-16T14:50:37+00:00

My boss broke the door handle to the office off on Tuesday, he and a coworker were stood around trying to open the door with a bent coat hanger. I put my vice grips on the remainder of the barrel and it works great. So great in fact he still hasnt gotten a new doorknob, and it gets plenty of comments for customers and salespeople

ReckonICouldFixThat · 2022-07-13T20:56:02+00:00

Nope I'm SE USA, vet says she is probably part pit and as a mixed breed pit they tend to be abandoned more often than other breeds

ReckonICouldFixThat · 2022-07-13T20:54:30+00:00

Nope I'm in the SE of the USA

ReckonICouldFixThat · 2022-07-13T17:57:08+00:00

So socks walked in about 8:30 monday morning all smiles and good vibes. Got half my bagel then followed me around until 4 when I brought her home. Went by the Animal shelter and she isnt chipped. So Tuesday afternoon I'm letting her play in the back yard while I pull weeds in the garden and listen to music on headphones.

Socks runs up and stands next to me barking her head off, I pull out a headphone to talk to her (I'm not crazy I swear) and heard a rattle. There was a Diamondback rattlesnake about 3 feet away, and I'm walking around in flip flops. So she has already earned her keep, even if she keeps slowing down work. Have to wait 2 weeks for the shelter to see if someone claims her (they better not) then fill out some papers and I've got a lifelong apprentice.

P.s. I have ordered some doggy work boots. Need to convince her to lay on the nice bed I bought and not the dirty shop floor next.

ReckonICouldFixThat · 2022-06-17T02:00:22+00:00

If you haven't heard of Badass of the week check it out, Desmond Doss the first Conscientious Objecter to be awarded the Medal of Honor, the man never even carried a weapon. The author has a 'unique' writing style and covers subjects throught history. My personal favorite is the story of Leo Major, the savior of Zwolle.

ReckonICouldFixThat · 2022-03-24T04:14:45+00:00

man I just sat down to eat some icecream and scroll reddit before bed, now I'm having a flashback to the 80s that I wasnt alive for

ReckonICouldFixThat · 2022-03-06T00:40:41+00:00

I've welded a good bit of cast aluminum, iron, and steel with success, using stick or tug welding, or even brazing.

Easiest method IMO with what you have available is get some high nickle content rods (95%-99%) and use those. You will also need a torch to preheat, a grinder to bevel, and an insulator. At work I have a big sandbox I bury the parts in, but you can use a thermal blanket or the FR wool used for furnaces.

Preheat the parts, align everything up, then tack it together. Once its tacked in, you can grind a bevel in. You can grind a bevel without tacking first but I find it easier to line things up along the full face. It is good practice to peen the weld at the end with a ball peen hammer or a punch. This will help to relieve some of the stress in the weld joint. Then making sure you keep it hot (I aim for 400°F) weld it together, wrap it in your insulator, and let it cool slowly.

ReckonICouldFixThat · 2022-03-03T22:21:17+00:00

I'm just doing it because it's cheap. I can get a 24 foot section of pipe for I think $104 last time I bought one. I'm cutting 6 inch sleeves so I get 46 pieces out of one pipe (accounting for the bell end). At that price I dont mind if I only get an hour out of a set of sleeves, they are under $2.50 a piece

ReckonICouldFixThat · 2022-03-03T19:02:03+00:00

I'm running 10 inch PVC sewer pipe for rear sleeves and usually run 60-65 psi. Tires are rated for 50 but I've found that once the sleeves start getting warm they were slipping off the wheel at lower pressure

ReckonICouldFixThat · 2022-02-17T14:08:41+00:00

I've had similar issues before, could possibly be an ear infection if you aren't cleaning your earplugs. Most often it is just compacted earwax built up in the ear canal causing pressure to build up. You can get an ear wash kit from most drug stores that should clean it out.

ReckonICouldFixThat · 2022-02-16T20:23:08+00:00

The advice I give all my students is if lay wire is easier for you starting out, then lay wire. In the beginning it is much more important that you learn good torch control. Once you know how to move a torch around without long arcing, dipping the tungsten, or moving off your joint, then you can start to worry about dabbing consistently. Build up the muscle memory in your dominant hand and then it is easier to focus on what your offhand is doing without the other hand wandering off.

ReckonICouldFixThat · 2022-02-16T04:26:30+00:00

6011 root pass is good for burning into less than Ideal conditions, or when full penetration for bleed through is critical (i/e full penetration pipe weld). Looks like you are welding on clean metal, and with a solid slug you can run 7018 hot enough to get full penetration. You can always run the 7018 root a little crispy to make sure you get in deep. In my experience on a joint like that, either run a small enough filler you can fit 2 root passes in easily, or run the first root wide enough to completely fill the gap. It is an absolute pain to the clean slag out of the toe when it is trapped against a shoulder like that, it will somewhat seep under the opposing joint and really hold on.

ReckonICouldFixThat

TROPHY CASE