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  1. Replies
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    Its not rubber. It is a Gates Polyflex 5M Micro-V...

    Its not rubber. It is a Gates Polyflex 5M Micro-V belt made of endlsess (not spliced) reinforced Polyurethane. Resistant to solvents etc, exactly the same that is probably used in your car and...
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    The Sieg X3 is a mill. Yes, its my primary mill.

    The Sieg X3 is a mill. Yes, its my primary mill.
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    Stuart, that was me. And no, things do not get...

    Stuart, that was me. And no, things do not get hot or cold if you allow about 10 to 15 minutes for the transfer. The donor cylinder does not get cold enough to show condensation. The receiver...
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    http://www.homemodelenginemachinist.com/downloads/...

    http://www.homemodelenginemachinist.com/downloads/files/X3_VFD_Part1_version2.pdf
    http://www.homemodelenginemachinist.com/downloads/files/X3_VFD_Part2_version2.pdf
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    That two part article was from me. Ask if you...

    That two part article was from me. Ask if you need to know more detail.
    1/2 hp vector VFD is in my opinion plenty of power for the weight and rigidity of an X3.
    I used a 3-speed Polybelt...
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    I am on clay soil too. In summer the soil recedes...

    I am on clay soil too. In summer the soil recedes and wide cracks open everywhere. The soil rectracts leaving about 10mm of air all around wooden posts. That is the season when the posts can be...
  7. My experience on tapered threads: - I apply...

    My experience on tapered threads:
    - I apply teflon tape, then smear a light coat of Stag paste over the teflon tape just before putting together (Stag paste dries very fast. If you allow it to dry...
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    Agree, but it needs to be more than a compact...

    Agree, but it needs to be more than a compact tractor, or the front wheels will lift off the ground without the post moving. The best is to do this sort of job in summer when the soil is dry and has...
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    If the speed control is tested fine, and the...

    If the speed control is tested fine, and the overload light comes on, chances are the motor has a problem. Sieg makes their own brushed DC permanent magnet (PM) motors. From my experience with my X3,...
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    This is the link to the manufacturer "Rapid...

    This is the link to the manufacturer "Rapid Original" near Milan in Northern Italy:

    http://www.rapidoriginal.it/

    They also sell under the name "GFB Universal - since 1948" and "GFB Special...
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    A very worthwile project is to fit a stepper...

    A very worthwile project is to fit a stepper motor to your rotary table with an electronic divider box. It will let you choose any number of divisions (and much more). You then can then sell your old...
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    Bob, here is a set of 8 M0.3 involute Module gear...

    Bob, here is a set of 8 M0.3 involute Module gear cutters from Belarus - US$80 is quite a bargain, less than $9 each and postage is free:...
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    Some DRO let you add the readings of two scales...

    Some DRO let you add the readings of two scales and show the result on one display. On my mill (different make from yours) I have installed two Z scales. On on the quill, the other on the column. The...
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    If you have an old Akubra hat... its excellent...

    If you have an old Akubra hat... its excellent very high density felt and cuts easily without fraying out. You have to cut 3 or 4 pieces and double them up to the required thickness. Use a punch if...
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    I had a Chinese 3phase 5KVA silenced diesel...

    I had a Chinese 3phase 5KVA silenced diesel generator. Was test running it with a [email protected] heater. After about 45minutes it failed. One of the three stator windings had shorted. If one phase is...
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    Mill finish, that is how the compound base is...

    Mill finish, that is how the compound base is when new. Myford is just a good quality hobbylathe. Not a Schaublin or a Hardinge that costs 5 times more.
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    Yes you can turn small pieces on a large lathe....

    Yes you can turn small pieces on a large lathe. But unless its in the price class of a Hardinge AND well maintained and looked after, its probably not going to be much joy doing so. Tactile feedback...
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    Nowdays camlock TS have become a standard feature...

    Nowdays camlock TS have become a standard feature for hobbylathes above $1k. But only 5 years ago, there were many below $2K lathes that did not have this feature. It does in no way affect accuracy...
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    Read, think, write The OP did say in his very...

    Read, think, write

    The OP did say in his very first post:
    > I have considered second hand but the following concerns me:
    > Spare parts availability, no warranty, Distance traveled to then
    >...
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    It refers to the way how the tailstock is clamped...

    It refers to the way how the tailstock is clamped to the bed. With hobbylathes, the cheapest models clamp the tailstock with a nut and a spanner. Intermediate models replace the spanner with a lever...
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    - The Heerless lathe on your Gumtree link for...

    - The Heerless lathe on your Gumtree link for $1.8K is indeed Taiwanese from the 80's (Heerless is since 2002 Hare&Forbes, they probably can still provide most parts). On the pictures it does not...
  22. It depends a lot on your circumstances. A -...

    It depends a lot on your circumstances.

    A - If your compressor is an "oilfree" type, then there is to begin with no oil at all in your air system, not even in the receiver vessel.
    B - If your...
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    There is nothing critical with making these. You...

    There is nothing critical with making these. You will be fine without surface plate and without any need for scraping. You may have to rough out the castings all around before finishing to avoid...
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    The ways of Chinese lathes are ground, not as...

    The ways of Chinese lathes are ground, not as fine a finish as on western lathes, but ground. That is where the Headtock sits on.

    The bottom of the headstock of chinese lathes is usually just...
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    Yes the Chinese test bars on eBay are all...

    Yes the Chinese test bars on eBay are all specified 0.01mm. That is sufficient to achieve Schlesinger standards which I think (I did not lkook it up) is something around 0.02mm/200mm. Mind you,...
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    Pete, I did it without a test bar. First I tried...

    Pete, I did it without a test bar. First I tried the RDM method but gave up on it. Then the good old spool method. It took me several days, the best part of a week. That is why I can say with...
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    I have to disagree. Importers only import what...

    I have to disagree.

    Importers only import what their customers want and buy. Else the importer goes fast out of business. Customers want cheap. Not value, not perfection, only plain cheap. Just...
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    Yes, headstock torque shimming is bodging. But...

    Yes, headstock torque shimming is bodging. But the sad reality is, that nearly all these low cost hobbylathes ARE built like this. How else could you manufacture a 9" lathe for under $1000, or a...
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    What about the Frech version?...

    What about the Frech version?
    https://onedrive.live.com/view.aspx?resid=547FE296ECFD561F!319&cid=547fe296ecfd561f&app=Pdf

    Seriously, I have not come across a free C8 user manual copy in the past...
  30. Replies
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    So you have never torque shimmed a headstock,...

    So you have never torque shimmed a headstock, have you?

    The OP has a low cost Chinese lathe with a headstock that wobbles on the bed. He needs good advise on how to best handle this. Not fantasy...
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    Ian, maybe the hall sensor is for an RPM meter...

    Ian, maybe the hall sensor is for an RPM meter then?

    Anyway, it is not recommended to use an internal VFD power supply for anything not directly related to the VFD operation itself. The reasons...
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    I think the Huangyang 24VDC output is rated for...

    I think the Huangyang 24VDC output is rated for 0.1A only. If your tacho draws less than that, and no other 24V loads are attached, you could be fine.

    I did not know their VFD's were accepting...
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    Actually, Rollies Dad proposed this method...

    Actually, Rollies Dad proposed this method explicitely and only to untwist the bed, without needing to own a precision level and a test bar.

    An undisturbed and correct headstock alignment is...
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    You have never aligned a headstock that required...

    You have never aligned a headstock that required the torque shimming method, have you? There is no point before you have made this experience yourself.
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    Yes, you can first align the headstock in the...

    Yes, you can first align the headstock in the horizontal plane until both spools have the same diameter, then align it vertically until the indicator clocks the same on top of the spools whilst...
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    - The two collar method bases on the assumption...

    - The two collar method bases on the assumption that the headstok has been accurately scraped to the bed. To verify this assumption, a test bar is needed.

    - Colchesters are expensive lathes and...
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    That is about the one and only lathe adjustment...

    That is about the one and only lathe adjustment that really, absolutely, requires the use of a test bar as in practice it cannot be done without. But only once. Once that headstock is aligned, there...
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    I always measure at the very tip of the drill,...

    I always measure at the very tip of the drill, right across the ends of the flutes with a vernier caliper. That is what matters most for the bore diameter.
    Some of those drill shafts look pretty...
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    The general consensus is to use a test bar that...

    The general consensus is to use a test bar that directly fits your spindle taper.

    That said, it depends what you want to do with it. What sort of accuracy are you chasing? How often would you use...
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    There are subtle but in my opinion important...

    There are subtle but in my opinion important differences between the 6x4 bandsaws made in Taiwan, and those made in China. Not only fit and finish. You only see these differences when comparing close...
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    Bob, - the old German DIN934 standard has been...

    Bob,

    - the old German DIN934 standard has been withdrawn long ago
    - the international standard ISO4032 (in Europe EN4032) replaces the old DIN934 standard
    - M10 nuts to ISO4032 differ from...
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    And you have a lathe and a mill. Meaning that...

    And you have a lathe and a mill. Meaning that over the years you will cut quite a bit of thick plate and bar. A 6x4 bandsaw is what you need, like the H&F BS-4 or BS-5. It can be used horizontally...
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    If it does not have to be portable, the cheapest...

    If it does not have to be portable, the cheapest recommendation has to be the BS-4A from H&F. Its the one I have had for the past 10+ years. Get a bi-metal blade with it. There is plenty of online...
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    I have found that some of the best quality (not...

    I have found that some of the best quality (not the cheapest soft stuff) kitchen cutting boards are made from a material that can be used to substitue expensive engineering material sheet. Maybe next...
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    > I got more 2 flute-Slot Drills than I did 4...

    > I got more 2 flute-Slot Drills than I did 4 Flute End mills. Can I assume that the 4 Flute therefore gives a better surface finish than the two, based on the description Bollie gave??

    The more...
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    351507 The wooden blocks are made from hardwood...

    351507
    The wooden blocks are made from hardwood cutoffs (left over when making new door jambs) - or whatever nice wood scrap is at hand. These are about 20mm thick planks. I glue tree of them...
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    Depends what you use it for. The errors are...

    Depends what you use it for. The errors are cumulative. A 300mm long square to DIN 875/2 is allowed to have a straightness error of 20um plus an angle error of 50um. That is an allowed total error of...
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    Not much room left between the top of that vise...

    Not much room left between the top of that vise and the collet.

    - The SX3 already has a tilting head. The tilting feature of that vise is therefore not much useful, it just reduces your distance...
  49. The Toyo is a Japan made metric lathe with a...

    The Toyo is a Japan made metric lathe with a proprietary spindle nose. Toyo is no more in business, but the German Proxxon did take over the Toyo designs. You can buy a Proxon chuck off the shelf to...
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    When configuring, you simply tell the VFD that...

    When configuring, you simply tell the VFD that the motor is 1/2HP, and its nameplate current rating. The VFD will then properly protect your motor and limit its maximum current/power to it.

    There...
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