What's new
What's new
By:
Advanced search…

Search results

  1. mhajicek

    Cheap bullpup semi 12 gauges?

    Seems there are a bunch of cheap semi-auto bullpup 12 gauges on the market right now, the cheapest of which is $200. I'd like to get one, both for home defense, and for the coolness factor (I've been playing some Shadowrun lately). I understand the cheapest ones are made in Turkey, and some of...
  2. mhajicek

    Maker Funnies

    And you guys thought your Haas was floppy?
  3. mhajicek

    Haas next gen ATC shuttle motor electrical fault, intermittent.

    Not all the time, but about once every half a dozen toolchanges, my 2017 CM-1 is showing an ATC shuttle motor electrical fault when trying to bring the umbrella to the spindle. If I manually pull the umbrella out, and then push it back far enough that it doesn't have a position fault, it will...
  4. mhajicek

    Client-owned machine in your shop?

    I have a client that is considering buying a machine to put in my facility (I'd be moving from my garage to a small rented space a few blocks away.) Obviously I can't charge the same rate as if I owned the machine. Have any of you been in this type of situation, has it worked out, and how much...
  5. mhajicek

    Tumble blasting small, delicate parts?

    The parts I make the most of are Ti6Al4V-ELI, about 1" x .300" x .1875" (with some variability). They're hollowed out medical device housings with joining tabs. For the initial prototype quantities, I hand media-blasted them. When we got into the hundreds, I started sending them to Arrow for...
  6. mhajicek

    Edge breaks on plate parts?

    I'm overseeing this job largely as a favor to a great customer. It comes in every few months, three of each of two part numbers, which get laser cut from 11 gauge 304. I then edge break them by hand, which is a PITA, then they go back out to get bent and welded. They're too big to fit on my...
  7. mhajicek

    Chuck for HA5C

    I'm looking for a simple, cheap, 3-jaw and 4-jaw chuck to put on my Haas HA5C-T indexer. Looks like it takes a 2 3/16" -10 thread. I can't seem to find any chucks with that thread, or adapters with that thread already in them. Will I have to buy a blank adapter and thread it myself, or is...
  8. mhajicek

    Why are dry ice deburring blasters so expensive?

    So a standard media blasting cabinet is about $2k. There are dry ice blasters for about $2k, intended largely for automotive cleaning. But one for deburring plastic parts is $30k and up. What's in them to warrant that price?
  9. mhajicek

    Tool life and Productivity in Ti Grade 2 vs Grade 5?

    I'm helping a client shave cost on a production part, and we figure we should be able to get away with downgrading it from 6/4-ELI to grade 2. For those with experience in these, how much better tool life, and/or productivity increase can we expect after making that change, assuming we're not...
  10. mhajicek

    Adding a crosshair reticle to a digital microscope?

    I have the kind of toolscope with a big rectangular lens as an optical "screen", and it's pretty hard to get enough light to see small details. I got a digital microscope, which is much easier to see through at that scale, and I'm thinking about swapping in that in as the head on the toolscope...
  11. mhajicek

    A physicist, an engineer and a mathematician...

    A physicist, an engineer and a mathematician each enter a room containing a bucket of water, and a garbage can that is burning. The physicist looks at the fire then looks at the bucket of water. Pulls out a sheet of paper and calculates the exact amount of water required to put the fire out...
  12. mhajicek

    Mitee Bite clamps out of stock?

    I just ordered some 3/8" Uniforce clamps, and they won't show up until the end of March. Is this a common occurrence? Supply chain issue? Seems hard to plan a fixture if you don't know what's available.
  13. mhajicek

    Ceramic stylus for Renishaw OTS toolsetter probe?

    Using small, coated carbide cutters, and often using tool breakage detection, I keep wearing divots in the face of my tool setter stylus. I've seen in some videos and literature for certain machines that some brands use white stylus, what looks like ceramic, but I can't seem to find a source of...
  14. mhajicek

    TRT70 workholding, Xin Dian mini self centering vise.

    I got a gently used TRT70 trunnion from EMTech here a couple months ago, and just plugged it in and tested it out over the holidays. It seems to be working well, and it's really fast, fast enough to jump off the floor if I rapid it 90 degrees while it's sitting loose. It came with an adapter...
  15. mhajicek

    Grease discontinued. Switching way lube to oil?

    Apparently Haas is discontinuing way grease and switching to oil. I know some folks have had trouble with solidifying and clogging, but my impression is that's mostly on machines which sit idle most of the year. I really like the grease system, because unlike every other mill I've worked on it...
  16. mhajicek

    Don't spin up your probe!

    Just found this, and my 2022 CM-1 has it: I don't think my Renishaw probe would enjoy 50,000 rpm. But it will handle 10,000 rpm for a second or two without damage, which I learned when accidentally starting the spindle warmup after setting my work offset.
  17. mhajicek

    PSA - Norma .223 Recall

  18. mhajicek

    Small self centering vises

    Haas just sent an ad for this, for $800: https://www.haascnc.com/haas-tooling/mill_workholding/vises/05-0013.html I got a bunch of these for $60 each, and they seem just as good as the Lang's I'm used to...
  19. mhajicek

    Too much demand!

    What do you do to keep your clients happy when momentary demand outpaces your supply, and other shops can't meet the needed lead time and quality for subbing out to? I have two months of work to do in the next month.
  20. mhajicek

    HVAC service, Minneapolis area?

    It seems HVAC repair service is done like Uber these days, but with piss poor management. I called Gordons, and they said they could have someone out the next day at a certain time, and sent a confirmation email. No call, no show. After calling them a few times, I finally got a call back from...

ABOUT PRACTICAL MACHINIST

With more than 10.6 million unique visitors over the last year, Practical Machinist is the most visited site for metalworking professionals. Practical Machinist is the easiest way to learn new techniques, get answers quickly and discuss common challenges with your peers. Register for the world’s largest manufacturing technology forum for free today to stay in the know.

Learn more about us.

STAY CONNECTED

Facebook Instagram YouTube LinkedIn Pinterest Twitter Tiktok

Register Become a forum member. Register today.

Sign Up Sign up for our e-newsletter.

© 2024 Copyright Practicalmachinist.com. All Rights reserved.

Back
Top