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Type: Posts; User: Pete F

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  1. Replies
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    Yes that's definitely the case Ray. The amount...

    Yes that's definitely the case Ray. The amount will depend on what grade of nylon it is. I knew nothing about any of this until getting into squirting the stuff around the place. We keep nylon...
  2. Assuming you're going to disassemble Bob? Hot...

    Assuming you're going to disassemble Bob?

    Hot Trisodium Phosphate, rinse in hot water to dry followed by an etch primer. Watch the TSP on some surfaces that aren't to be painted, especially chrome...
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    Were you able to transmit the full 1/4 horsepower...

    Were you able to transmit the full 1/4 horsepower available through that rubber band?
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    For something like this Bob I think an...

    For something like this Bob I think an approximation would be more than adequate with just a tad more clearance provided. The difference between 15 tpi and 15.24 tpi is only something like 1.5%...
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    Bob the gear combination will be purely a...

    Bob the gear combination will be purely a function of the leadscrew and the lathe won't matter. However I'd forgotten you had an imperial lathe. If you take 25.4 and divide it by the pitch in mm, you...
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    I guess you could grind a score mark in them and...

    I guess you could grind a score mark in them and snap them down smaller, but yeah, I hear you regarding not seeming to have enough at times! I bought some very cheap feeler gauges somewhere in my...
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    Nicely done. I agree, just flipping a part...

    Nicely done.

    I agree, just flipping a part will leave you standing there until the cows come home, and if a part is sucking down you either need to shim the bow in the part, or sometimes I will...
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    Bob, cutting the Schaublin thread isn't difficult...

    Bob, cutting the Schaublin thread isn't difficult and I can send you the gear ratios for the 260 if you want to do that (I'm away at the moment). The trick is not to think about it being 1.6667...
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    Mark, can you email or PM the details of the...

    Mark, can you email or PM the details of the right angle connectors? I went looking for them and didn't really find anything in either right angle, or adjustable in other than smaller sizes. I have...
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    Mark I'm happy to go in for some vials too if you...

    Mark I'm happy to go in for some vials too if you need to buy a number to make a purchase possible or cut down freight. Just send me an email when you get to that stage.

    For the right angle and...
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    Bob I always like the way you do things "right",...

    Bob I always like the way you do things "right", and clearly this is no exception. However I can't help but wonder if you're not overly concerned about the accuracy of this part in regard the...
  12. Thread: DRO Advice

    by Pete F
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    Max if I recall correctly the brackets that came...

    Max if I recall correctly the brackets that came with mine are still here in the scrap bin pile. I may have salvaged some to actually use, but can't recall doing so. I'd suggest machining up...
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    Michael, you can see that 54th hole is...

    Michael, you can see that 54th hole is interfering. I guess in that regard it would work, but it's beyond not being elegant, and I certainly wouldn't do it. There is no real disadvantage to dropping...
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    Yeah, but you still have to stand there and...

    Yeah, but you still have to stand there and layout 107 holes :oo: IIRC Bob is counting turns to do so too!!!
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    Sweet as Bro-Bob! That's exactly the sort of...

    Sweet as Bro-Bob! That's exactly the sort of thing I had in mind.

    That's a good video ... AND it's plastic Michael :wink: I subscribe to Tom Lipton's Youtube channel, almost certainly saw that...
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    You're on a hiding to nothing if you try to brute...

    You're on a hiding to nothing if you try to brute force a fence post out. RC nailed it, dig a "dam" around the post down about 300 mm, fill up the dam, stand back and have a beer. After it's began...
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    Phil how did that shipment work out for you in...

    Phil how did that shipment work out for you in the end? I must say you're a brave man to do all that work and expense and ship it off to a foreign country, still, Ireland isn't far away, and I guess...
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    Oh BTW Michael, I don't think this will work in...

    Oh BTW Michael, I don't think this will work in the way I think you're imagining. You can't put in 2 rows of 54 and just leave one out at the end to get 107. :wink:

    Bob if your existing dividing...
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    Michael printing holes on the edge probably...

    Michael printing holes on the edge probably wouldn't result in them being very clean and round. Sometimes I'm however surprised with how well horizontally orientated holes work out though. The issue...
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    G'day Bob, it's seriously no effort to print this...

    G'day Bob, it's seriously no effort to print this off for you, and I think you underestimate both the accuracy and strength of the finished prints in plastic. At the BCD of the indexing plate, the...
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    G'day Bob, yes a notched ring could be made, no...

    G'day Bob, yes a notched ring could be made, no problem, but I wouldn't be too concerned about the amount of material, at least if I'm printing it for you.

    I'm not sure why it's not possible to...
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    Bob there are many different types of 3D printer...

    Bob there are many different types of 3D printer technologies around, and unfortunately most not associated with the field just bundle them all in to "3D printing". It's a little like saying a "metal...
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    Yes but they came from an era when everything was...

    Yes but they came from an era when everything was built like that :D

    Seriously though, you're lapping a centre, not punching through with a 25 mm morse taper drill bit, so I'm struggling to see...
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    Cripes, for the money they're asking it seems a...

    Cripes, for the money they're asking it seems a complete no brainer to modify an existing pedestal drill so the bottom centre can't rotate as it travels up and down; one ground rod a couple of...
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    I saw that thread, noted that it had been...

    I saw that thread, noted that it had been answered at post #2, and moved on. As you said Phil, moving or repairing a centre is basic lathe work. Mind you in the land of "If it don't fit in a 3 jaw...
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    Mark wouldn't the readings be straight sine...

    Mark wouldn't the readings be straight sine calculations? So if you know the distance between the sine pins then the calculations are standard. Mind you the only one I remember is 30 degrees. That...
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    Oh ok, in that case it would be very easy to make...

    Oh ok, in that case it would be very easy to make one if it's just a mini sine plate. Well, maybe "easy" is relative, but at least theoretically straight forward.
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    Thanks Mark, I've had these saved as an ebay...

    Thanks Mark, I've had these saved as an ebay search for years, they rarely come up. However their construction is such that it would be possible to make a fairly good facsimile with a micrometer...
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    Instead of drilling a hole in the tyre, why not...

    Instead of drilling a hole in the tyre, why not just take the valve out of the tube and poke the nozzle in there?
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    Ken there was nothing special grade about the...

    Ken there was nothing special grade about the bearings Hercus put in there from new. They were schmuck grade, and definitely not $1000 ultra-precision bearings.

    I just went through the exercise...
  31. Thread: DRO Advice

    by Pete F
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    In Z the level of precision will basically be...

    In Z the level of precision will basically be ordered: Knee, then quill, then .... hand drill. So it makes sense to use your most convenient and accurate Z readout on the knee, as that's what you'll...
  32. Thread: DRO Advice

    by Pete F
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    Honestly Max, I would go with the Singapore...

    Honestly Max, I would go with the Singapore option. Yes it's relatively expensive, but I haven't had any issues with mine and it's a tried and proven method of measuring. Once you have a DRO you will...
  33. Thread: DRO Advice

    by Pete F
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    G'day Max, most of the machines I've seen like...

    G'day Max, most of the machines I've seen like this have the DRO on the knee, and have a separate and inexpensive self-contained scale on the quill. Something like this...
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    It's hollow so will need a pipe centre.

    It's hollow so will need a pipe centre.
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    In the US those grinders sell quite cheaply,...

    In the US those grinders sell quite cheaply, however here you could buy a good used T&C grinder for the same amount of money, or cheaper. Otherwise a reasonable tool rest from Veritas is quite...
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    It's ok, he's wearing his safety hoodie!

    It's ok, he's wearing his safety hoodie!
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    Listen to Da Man Mark, chop chop! All being well...

    Listen to Da Man Mark, chop chop! All being well I'll have the Type 0 finished this week and then I will have to get a 9" bed ready as a crash test dummy for you:D
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    Nicely done Phil, a very professional end result,...

    Nicely done Phil, a very professional end result, as always.

    What did you grind the spindle face on? It looks like it may have been side wheeled, but if so I sure would like to see some shots of...
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    Really not much different to wood in that regard....

    Really not much different to wood in that regard. Different steels have different alloys added to them to change the basic iron's properties and make the material better suited to different purposes....
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    Maybe not, not for me to be the judge of what...

    Maybe not, not for me to be the judge of what others can or can't afford, however you specifically stated this.



    I'm curious as to why you specifically state that you would not use mild steel?
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    No 102 here Bob. I turned down the MT3 taper on a...

    No 102 here Bob. I turned down the MT3 taper on a Wohlhaupter head and will shrink a W20 dedicated tool holder on it. Getting everything concentric, although not actually required in this case as...
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    Can't criticise what you did at all Bob, and from...

    Can't criticise what you did at all Bob, and from what you said, if I had the same material laying around then I would have done exactly what you did. My point was to suggest that if someone was...
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    Phil you seem to be missing the point that I'm...

    Phil you seem to be missing the point that I'm trying to make here. Some people state that the compound NEEDS to be precisely 27.5 or 29.5 degrees in order to cut a thread in this way. I can say,...
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    Ah nope, it looks to me that compound is set...

    Ah nope, it looks to me that compound is set slightly under 29.5 degrees Phil, so I'll mark that photo as a fail. Not so easy maybe :wink:

    That's the point, so you split the divisions and think...
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    The other thing to point out in all seriousness...

    The other thing to point out in all seriousness is that if you're banging on the drawbar it means it's self-locking taper on the other end of your percussion instrument. That being the case it...
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    ... or you could leave it attached to the bar,...

    ... or you could leave it attached to the bar, turn and thread the piece, then part it off an machine the head.
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    Oh, you don't use the damascus, forged from...

    Oh, you don't use the damascus, forged from billet, Aquamet? Well, there's ya problem!!!
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    Agreed, nothing wrong with using 4140 if that's...

    Agreed, nothing wrong with using 4140 if that's what floats your boat, but I see no reason to use a high tensile steel in something as mundane as a a drawbar. You don't get anywhere near the yield...
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    Why not?

    Why not?
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    Set your compound to any angle you like, just so...

    Set your compound to any angle you like, just so long as it's less than half the included angle. As Pipeclay says, that will be 27.5 degrees for a Whitworth. In reality however this 0.5 degrees...
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