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  1. sfriedberg

    Can we get rid of 15 second timer on reporting spam?

    So we all know the forums have been deluged with totally unrelated-to-machining spam, much of it in foreign languages, for the last couple of weeks. The spammers have obviously automated most of their process, creating multiple new accounts daily as yesterday's get banned by the overworked...
  2. sfriedberg

    Slightly OT - Vendor blog funny

    I'm pretty sure this page on emergency 5C collets was generated either by a cheap paid "website developer" or some AI. I lost it toward the bottom where they claimed that:
  3. sfriedberg

    What is the current KO Lee 60M a clone of?

    I was poking around the Leblond USA website today and noticed they have the KO Lee brand, too. The KO Lee 40M tool&cutter grinder is obviously a clone of the Cincinnati #2, both product photo and model 40 indicating that. I am curious about the 60M, though. It is a long-bed design and the...
  4. sfriedberg

    Preferences for Haimer or Tschorn?

    The Metrology forum seems slightly more appropriate than the General forum, but moderator feel free to move this. I have gotten spoiled by the Haimers (two different models) at a shop I do some work at, and have decided to spend the money for a 3D taster for my home shop. Would you recommend...
  5. sfriedberg

    Wanted: Sensi-Threader or plaque from same

    Out of the blue, Krista Van Veen, a granddaughter of Herb Field (1902-1991), the inventor of the Sensi-Threader, contacted me and asked for assistance in obtaining a Sensi-Threader. (I do not know her, she got my contact info off LinkedIn.) She asked me to pass along her email...
  6. sfriedberg

    Video of large planer mill with pushbrooms on fire

    Several times in the past I have watched a video of a large planer mill (almost certainly an Ingersoll-Rand) facing off the top of a very large slab. (I can't recall if this machine had multiple heads in operation.) The cutters were making chips that probably weighed 0.5 to 2 lbs, and there...
  7. sfriedberg

    Will a Hi-Roc drill survive this situation?

    Sorry I don't have a photo to show. I just ran across a hard-as-hell inclusion in a 1.75" square bar of CF 1018. Was using a HSS 1/8" wide plain milling cutter (slotting saw) to make some .203" wide, 0.156" deep grooves. Using quite conservative SFM, feeds and DOC, total of 6 passes. Did one...
  8. sfriedberg

    How to turn/grind between centers with deliberate small eccentricity?

    There's another thread active about turning eccentric (1/8") long (8') shafts on a manual lathe. I've got a smaller scale problem where I'd like to ask for advice. I plan to teach some highschoolers some rudiments of precision measurement, and part of that is testing for taper and TIR, with...
  9. sfriedberg

    Q: Technique or tool for spreading blue on a dovetail

    I've been working over the Y axis of an unmentionable, got the load-bearing bed ways and saddle ways planar, and used a dovetail straightedge to clean up the non-gib dovetail of the saddle. I now want to blue up that saddle dovetail to transfer to the mating bed dovetail in order to...
  10. sfriedberg

    Thinning thick Canode?

    I have three bottles of Canode I got a few years ago, and they have done that funny thing where the plastic bottles have sucked inward (as if there's a vacuum inside, but there is no actual negative pressure) and the contents have gotten a bit thick. I found the 2014 thread here about...
  11. sfriedberg

    Wanted: Narrow thin stainless strip or shim

    This is a bit of a long shot, but if anybody has narrow stainless shim, or thin sheet shear drops or maybe a specialty metal tape of some kind, anywhere from 0.1-0.25" wide (1/8" would be great), 0.002-0.010" thick (0.005" would be great), 4" or longer useable lengths, I'm interested in getting...
  12. sfriedberg

    Group buy of 4 arc-second (0.02mm/m) level vials

    After procrastinating for a couple of years, I am finally organizing a group buy of ground spirit level vials. I'm looking specifically at Level Development's 5726/101 model, with a sensitivity of 4 arc-second (0.02mm/m) per division. As you can see from the link, these are raw vials without a...
  13. sfriedberg

    Sources for semi-custom HSS slitting saws?

    I have a job coming up where I need a 4" diameter saw, 0.035-0.036" wide, to cut a notch 1" deep in the edge of 0.5" thick 1018. At the moment, I'm looking at 72 teeth and alternate tooth chamfer. Because my feed control for this operation is less than ideal, I'm looking for HSS rather than...
  14. sfriedberg

    Thread cutting tool did a lot of thread forming

    I usually cut threads with die heads or taps, and do relatively little conventional thread cutting on the manual lathe. Over the holiday I needed to cut some simple 1/2" long 3/8-16NC threads on some 1/2" 1018 rod, and had a very strange experience that I probably should have had during an...
  15. sfriedberg

    Cyanoacrylate (super-glue) fixturing?

    We've got a one-off job coming up where we need to reduce the thickness of some stock 0.125" 6061 sheet to 0.098" and also cut some 0.050" to 0.070" slots the majority of the length of the part. My intention is to face off a sacrificial block held in the vise, then super-glue the sheet to the...
  16. sfriedberg

    Safe to dress wheel heavily clogged with aluminum?

    I've recently started helping out a high school robotics team, and came across a really revolting situation with their 7" bench grinder today. Despite clear labels "DO NOT GRIND ALUMINUM" on both windows/guards, some clueless student spent a long time smearing globs of aluminum into both...
  17. sfriedberg

    Admin: Reconditioning/scraping subforum not responding

    OK, here's a bizarro problem for the forum IT guys. For the last six hours (give or take), threads and posts under the Machine Reconditioning, Scraping and Inspection subforum have not been served to my client. I've tried following the main forum link to the overall subforum, and...
  18. sfriedberg

    Surface prep 4" OD aluminum rings for anodize

    I've got a small number of parts that won't fit in my vibratory tumbler which need surface prep before I send them out for anodize. All are rings cut from 4"OD X 0.125"wall 6061T6 aluminum tube, 4x 3/4" long, 1x 1-15/16" long, 1x 2-1/16" long. Just looking for the typical "galvanized...
  19. sfriedberg

    Somewhat OT - Questions about durable color selective coating

    Question: What would you recommend for a very durable, selective coating with a distinct color contrast to the base material? Let's assume our parts are roughly the size of a nut to fit a 3/8 or 1/2" machine screw. The natural material choice is steel, but aluminum is possible. Brass is also...
  20. sfriedberg

    OT: Some metalwork at the Maryhill Museum

    I've lived a couple hours away from the Maryhill Museum for about 25 years, but never took the time to go look at it. The history of the place involves a pretty wacky bunch of characters, including Queen Marie of Romania and an exotic dancer (no, not a stripper) and Sam Hill, a road-building...

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