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  1. Replies
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    Re: Denford Timeline?

    No there is no tailstock but Denford did offer one. I've even seen drawings of them.

    Were I doing your knurl on the Denford (or any small lathe) I'd set up a tool as used in a capstan lathe where...
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    Re: Denford Timeline?

    You could always set it up doing loads of knurling :)

    (I'd offer you one of my cut knurlers, but they are too big on the shank for the Baruffaldi tool turret slots )
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    BUILD LOG: Re: Thor, or should that be Zeus?

    Simple bypass from output to input - just a tap that can be opened gradually and you can set the pressure exactly as you want it. This was standard practice on the main Grundfos 3 kW pumps that...
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    BUILD LOG: Re: Thor, or should that be Zeus?

    I've always used Trent Plastics with good results. They cut to size and will do bends if needed - here is a 1 m square of 5 mm clear poly-carbonate:
    ...
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    BUILD LOG: Re: Thor, or should that be Zeus?

    Poly-carbonate sheet is used in professional machines for chip control and operator safety. Used in Police riot shields. Don't use acrylic as it shatters. Even poly-carbonate will stress rack...
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    BUILD LOG: Re: Thor, or should that be Zeus?

    I think the main point is to have a physical limit to save the ball screws if there is a runaway - preferably with a hard neoprene or other suitable plastic buffer.

    As for the latched relay then...
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    BUILD LOG: Re: Thor, or should that be Zeus?

    Bad luck Chaz

    However I do seem to remember posting this about a week ago (post #283)

    "However my personal preference on big powerful machines is to have the home switches inside the boundries...
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    BUILD LOG: Re: Thor, or should that be Zeus?

    No idea !

    I bought this machine as a barely working home made table, wiring was atrocious, much of the mechanics were ropey, but it worked. (I needed to cut some bits for a 6 foot flail mower I...
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    BUILD LOG: Re: Thor, or should that be Zeus?

    SY in the 4 core / 6 core / 0.75 mm CSA and 1.0. mm CSA sizes works fine for me in energy chain on my CNC Plasma

    Here it is being installed:


    21875

    21876

    21877
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    BUILD LOG: Re: Thor, or should that be Zeus?

    As with Clive I always use shielded.

    Pity you didn't mention it when you were over here at the weekend - I bought full rolls of SY cable for the limits and steppers on my CNC Plasma table and have...
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    BUILD LOG: Re: Thor, or should that be Zeus?

    No offence meant Chaz. I hadn't realised myself why some videos were like that until I happened to trip over that explanation
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    BUILD LOG: Re: Thor, or should that be Zeus?

    Well designed switch elements in micro-switches (or thumping big panel switches for that matter) are designed to 'wipe' so that as the contacts open they also slide a tiny bit in what is effectively...
  13. Re: Ready to push the button and buy a laser....

    JS probably saw my post here on Madmodder - see reply #23

    http://madmodder.net/index.php/topic,10888.msg126523.html#msg126523

    Oh, and my cable outer also was stripped too far back to use the...
  14. Re: Ready to push the button and buy a laser....

    I've been buying plywood and acrylic from Hindleys

    https://hindleys.com/
  15. Re: Ready to push the button and buy a laser....

    Dave you reckless devil !


    I used to use a bucket & pump, but it filled up with dead spiders and flies, and I wanted anti freeze in it as mine is close to a roller shutter door. As the dogs often...
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    Re: Post Processor for Heidenhain tnc 145???

    Ade Vickers modified a post for his TNC151 using conversational code - it's on the CamBam forum - just search for Heidenhain


    http://www.cambam.co.uk/forum/index.php?board=16.0

    Chap here using...
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    Re: 4 axis machining software

    4th Axis work is complicated by it's very nature !

    I've installed a servo driven 4th axis on my Beaver Partsmaster which uses a Heidehain TNC355 controller, and it works very well when I hand code...
  18. Re: Bridgeport 4th and 5th axis enabled machines

    Assuming you are talking Heidenhain equipped Bridgeports I think all the controllers from the TNC150 forwards had the capability to add a forth axis. What you may not have is the relevant Bosch servo...
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