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  1. Replies
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    Interesting shaped hatchet used early in the...

    Interesting shaped hatchet used early in the video, never seen one like that. The tools used both inspire me to do better and confirm me as a wood butcher by comparison.
  2. Start the linked video at 15:20 for turbine...

    Start the linked video at 15:20 for turbine spool. Even the head rotation (before spindle on) makes a lot less noise.

    YouTube
  3. Doesn't sound like any of the Moore jig grinders...

    Doesn't sound like any of the Moore jig grinders I've run (3-4). It's been about 20 years but I recall all of them had a distinct turbine whine as they spooled up. A lot of the spindle noise may have...
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    2,106

    Interesting post. I would have thought the...

    Interesting post. I would have thought the tooling nose would flatten or a fracture would develop. My previous notions about 3D printing are clearly under-informed. Thank you for the opportunity to...
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    JP Machining- I'd be interested in hearing what...

    JP Machining- I'd be interested in hearing what material would be used for 3D printing that would hold up to forming pressures and the abrasion. Two companies I contracted for used 3D printing. One...
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    901

    "AD Design, Your Comments?" Roger- I worked...

    "AD Design, Your Comments?"

    Roger- I worked with far more progressive than compound dies so I default to a prog die out of familiarity. I can almost visualize the compound design but can't quite...
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    901

    -Because I'd like the OP to admit that he/she...

    -Because I'd like the OP to admit that he/she isn't willing to do the research/homework required. I realize that far too many millennials simply want all their questions answered because they're too...
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    1,238

    As a LAST resort to dissolving old oil/crud that...

    As a LAST resort to dissolving old oil/crud that has gummed up the movement I have a suggestion. Do this ONLY if you're prepared to toss it as I can't guarantee the results with precision movement....
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    901

    No, it shouldn't be made in one station. Side...

    No, it shouldn't be made in one station. Side piercing of holes is ok for a few holes on flat sides. Not ok for 10 holes on round shaped object. Do you know why? What else have you discovered in...
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    Questions/Answers

    I agree with what others have already posted. What may not be clear (to me anyway) is whether the company you're making this for understand what the cost will be for what their expectations are. As...
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    Looks like shop made tooling that was dedicated...

    Looks like shop made tooling that was dedicated to a repeat job that was a PITA to set-up/use standard angle plates for. Are they hardened? I was a tool and die maker in a former life and I don't...
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    Your Reply

    sjzona- I'm certainly no grinding expert but I've ground a fair bit of ferrous and non-ferrous material in a former life as a tool and die maker. My attempts at grinding AL over the years have been...
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    1,319

    Mike- Was that OA, carborundum, silicone carbide,...

    Mike- Was that OA, carborundum, silicone carbide, or something else wheel sections?
  14. Replies
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    1,319

    I've ground the surface of AL blocks a couple of...

    I've ground the surface of AL blocks a couple of times when I had no other means of ensuring precision greater than a BP could offer. It was 6061 and I had several AO wheels to choose from as well as...
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    Perhaps I've not understood something here but...

    Perhaps I've not understood something here but what type of shop was this? Sounds like it might be a job shop but some thoughts on this situation can still be valid even if a product was made.

    1)...
  16. Replies
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    901

    You've not supplied enough information to get...

    You've not supplied enough information to get much help other than what has been posted by others. You need to supply:

    1) Intended part purpose/function
    2) Selected material and thickness
    3) A...
  17. It might help to state what material your "really...

    It might help to state what material your "really hard tool steels" are. Grinding D-2 isn't the same as grinding A-2 or S-7. The powdered metals will also likely grind different too, although I...
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    To follow the above post, I have an "Asian" jig...

    To follow the above post, I have an "Asian" jig borer and surface grinder that make no apologies for country of origin. It's about the level of build quality in a machine, or the lack of it, that...
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    "Also if I plan to cut up to tool steel, I would...

    "Also if I plan to cut up to tool steel, I would have to go with carbide, correct? (I would think that HSS wouldn't work)"


    -If the "tool steel" hasn't been hardened you can most certainly use a...
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    Most of the shops I worked at would try to keep...

    Most of the shops I worked at would try to keep two strips.

    1) Last run condition (kept with die)- Helpful to maintenance, QC, and calculating production run per service records

    2) First strip...
  21. My first question would be what method/tools...

    My first question would be what method/tools you're using to locate the ID hole before using a drill/end mill. If the lathe tailstock is out of alignment with the headstock then the hole will have to...
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    Usually A-2 is used for general work in...

    Usually A-2 is used for general work in relatively low production runs of under 10,000 pieces. I'd make it out of whatever is low cost for you, case hardened or pre-hard may work for your application...
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    I've used several on the job at various shops...

    I've used several on the job at various shops over the years. I didn't want to like the first one I used, being a resentful machine tool maker from America and all...., but I had to admit that it was...
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    Several good points made above that I neglected...

    Several good points made above that I neglected to mention. Machine warm-up and way oiling can be important when attempting sub 5um. I'd also want to run the table/saddle along respective axis to...
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    It will depend upon what you're grinding and...

    It will depend upon what you're grinding and whether you have extra material on it. Everybody has a favorite method for determining where zero is. For flat work some like using a strip of ordinary...
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