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Type: Posts; User: RayG

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  1. Replies
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    Hi Michael, Good to drop back for a visit. ...

    Hi Michael,

    Good to drop back for a visit. Still busy and too many unfinished projects. I'm not the one looking for higher speeds, that's mattm82.

    But since you asked, there appears to...
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    The original thread is here... ...

    The original thread is here... //metalworkforums.com/f65/t175815-waldown-speed the pulley dimensions I have are for the 12000/6000 rpm speeds. Note that it's not 20,000 NH model B as in the...
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    Hi Matt, I got your PM via an email from...

    Hi Matt,

    I got your PM via an email from tapatalk, but I don't have that installed anymore.

    I'll measure up that pulley and get back to you.

    Regards
    Ray
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    372866 That makes sense in a way, the...

    372866



    That makes sense in a way, the process of making a print from an etching is similiar to marking high spots when scraping. Definately worth further investigation.

    I think it's...
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    I think you are looking for canode, GregQ bought...

    I think you are looking for canode, GregQ bought up a heap and passed it around at one of the scraping classes, he had blue and yellow, some people used both for extra contrast.. :)

    Phil might...
  6. Thread: Workholding

    by RayG
    Replies
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    1,386

    Some kind of sacrificial pipe center? Or just a...

    Some kind of sacrificial pipe center? Or just a normal pipe center and stop the cut just short.
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    1,755

    Hi Ken, I buy wheels from Travers, and haven't...

    Hi Ken, I buy wheels from Travers, and haven't had any problems with shipping. Maybe it's an Amazon restriction?

    https://www.travers.com/surface-grinding-wheels/c/297966/

    7 x 1/2 x 1.250 ...
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    I guess it's just something to while away the...

    I guess it's just something to while away the hours doing something creative. I'd be thinking a wood lathe, or take up carving coconut shells?

    If it's to feed an addiction to metal, maybe a...
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    Thanks for the quick test Bob, :2tsup: I used...

    Thanks for the quick test Bob, :2tsup: I used the news disk on a few small jobs, I think they run quieter and smoother, definitely less sparks, which means less fires to put out :)

    The only...
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    Metal Cutting Disks

    I picked up one of these in Bunnings yesterday, never seen them before, maybe I lead a sheltered life? Has anyone got any experience with them?
    ...
  11. Thread: DRO Accuracy?

    by RayG
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    The DRO will be generally more accurate than the...

    The DRO will be generally more accurate than the lead screw. I've found the Easson scales to be pretty good generally speaking.

    Did you know that the DRO has a calibration factor? Which you...
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    Funny, it was right where I left it. ...

    Funny, it was right where I left it. http://www.backsaw.net/pics/Casting/Casting101.pdf

    Ray
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    The other one I linked to is a buck ( step down )...

    The other one I linked to is a buck ( step down )

    I don't know what LED arrays RC is driving but the 10x10 100W arrays I use here are 33V input.
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    Or go for higher power, just to be on the safe...

    Or go for higher power, just to be on the safe side.

    600W 10A DC Boost Step Up Power Converter CA CV Aluminum Base + Fan 10-60V Input | eBay

    Or a cheaper buck version.

    200W 15A DC-DC 8-60V...
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    1,065

    Hi RC, I looked at the specs of that buck cc...

    Hi RC,

    I looked at the specs of that buck cc converter, and it's rated at a maximum of 40V input, if you drive it from a rectified 32V AC supply, you'll get a peak of 32*1.414= 45.2V which...
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    Video looks good. I'm not clear on why you...

    Video looks good.

    I'm not clear on why you don't want to keep the center off change over switch?

    How were you thinking of turning it off?

    I assume you know that you should avoid...
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    Nice work, congratulations on making it all the...

    Nice work, congratulations on making it all the way through. Must have been a great feeling to see it running! :2tsup:

    I'm not sure if it's just me, but I couldn't see the YT video, it said ...
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    3,211

    Well done for having a go, my son-in-law is a...

    Well done for having a go, my son-in-law is a motor rewinder, so I defer all rewinding work to him.

    But I can point you towards the "bible" for rewinding, see if you can get a copy of Robert...
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    Is that the one from W&P? Looking pretty good.

    Is that the one from W&P?

    Looking pretty good.
  20. Replies
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    How big is the A&S plastic cover? I just got a...

    How big is the A&S plastic cover? I just got a heap of 3/4" thick black polythene offcuts. You are welcome to grab some bits next time you are coming past.

    Black poly welds nicely.
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    Hi Ken, Sounds like a normal day around here....

    Hi Ken,

    Sounds like a normal day around here. :) What mill are you putting the horizontal head on? Don't you already have a Adcock & Shipley, Or are you doing something with the Rossi?
    ...
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    4,859

    Using argon vs argoshield with MIG is like chalk...

    Using argon vs argoshield with MIG is like chalk and cheese. If you want MIG and TIG, you need both.
  23. Thread: Austech 2017

    by RayG
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    3,826

    Did anyone take pictures?

    Did anyone take pictures?
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    Thanks for that, yes that's the sort of thing...

    Thanks for that, yes that's the sort of thing that comes to mind when talking about humidity control. What I'm trying to avoid is condensation.

    Here's last night's data.

    367877

    So far...
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    Thanks for that, What does note 2 say?

    Thanks for that, What does note 2 say?
  26. Replies
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    I don't think it will work as an effective dust...

    I don't think it will work as an effective dust sensor without a few modifications.

    367862367863

    The case obstructs the airflow through the sensor, and the sensor itself is oriented at right...
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    Some 220-240V 3 phase input drives will work...

    Some 220-240V 3 phase input drives will work just fine with single phase input, depending on whether or not they have missing input phase sensing, the input is just rectified to DC whether...
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    Good question, although it's mounted up high, ...

    Good question, although it's mounted up high, I've got it angled down, the reason is to get the airflow over the machines and cover a wider area, down at ground level there is too much...
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    Hi Bob, I'm using it for temperature and...

    Hi Bob,

    I'm using it for temperature and humidity, and it comes as standard with the DHT-11 sensor, which is not especially accurate, so we replace the DHT-11 with DHT-22 and it performs pretty...
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    Workshop Humidity Control

    With the cold weather approaching we are moving into the time of year where we are getting nights where the temperature drops below the dew point causing condensation.

    The workshop is pretty...
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    Never tried straight flute, it was easier to...

    Never tried straight flute, it was easier to just use carbide spade bits.
  32. Replies
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    1,349

    With a normal carbide twist drill, the edges...

    With a normal carbide twist drill, the edges chip too easily.
  33. Replies
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    1,349

    Hi Chris, I have been buying the 3/16 carbide...

    Hi Chris,

    I have been buying the 3/16 carbide spade bits from Isaac at Blackburn tools, they cut through saw plate like butter.

    Blackburn Tools - Solid carbide spade drill bits

    If you...
  34. Replies
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    Hi Dale, Do you know if there any relationship...

    Hi Dale,

    Do you know if there any relationship with Dawn Australia?

    I seem to recall someone talking about Dawn getting their vise castings done in India.
  35. Thread: Austech 2017

    by RayG
    Replies
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    3,826

    This would be one of the best shows to attend, ...

    This would be one of the best shows to attend, unfortunately I'm not going to make it this time around, so for anyone who is attending, take pictures and let us know ( taunt us ) with what we...
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    I have a Schaffner cylindrical grinder that uses...

    I have a Schaffner cylindrical grinder that uses W20's There's a few pictures here //metalworkforums.com/f65/t199301-choice-spindle-lubricant#post1907628

    The plan is to grind an ER32...
  37. Replies
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    I think that "Bob's Grocery Shop" is actually...

    I think that "Bob's Grocery Shop" is actually Merlin Tools, if you look at the picture of the die from Aliexpress, that I posted it has a "Merlin Tools" embossed watermark.

    When I get around...
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    The one I got was a bit cheaper than the ebay...

    The one I got was a bit cheaper than the ebay link I posted, it was from aliexpress, so my expectations of quality are on the lower end of the scale, but visually it looks just fine.

    Here is a...
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    I just checked a bit of railway line I had, the...

    I just checked a bit of railway line I had, the web is only about 15 mm thick.

    367602

    The foot is a lot thinner as well?

    Ray
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    If you want high frequency switching, you might...

    If you want high frequency switching, you might be better off with a video game style paddle switch rather than a clunky toggle switch. You could manufacture a custom version with micro switches...
  41. Looks like you've got pretty close, If I...

    Looks like you've got pretty close, If I understand what I'm seeing, it looks like got contact all the way around, did you blue that on a surface plate?

    Ray
  42. Replies
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    I wish. No, this is for the Schaffner...

    I wish. No, this is for the Schaffner Cylindrical Grinder, I got a straight shank ER32 collet chuck, with the intention of making it into a W20 adaptor, I have all the bits needed but...
  43. Replies
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    I cheated and got one of these. 19.7 x...

    I cheated and got one of these.

    19.7 x 1.666 SV20 Die for W20 Schaublin Collets | eBay

    Although the one I got was cheaper than the one linked to above, I think I found it on aliexpress?
  44. Replies
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    They look like absolute position rotary encoders....

    They look like absolute position rotary encoders. With 16 wires going to the photocells, I'd hazard a guess they might be 12 bits. Might even be encoded as direct reading in degrees.
    See if you can...
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    They look like absolute position rotary encoders....

    They look like absolute position rotary encoders. With 16 wires going to the photocells, I'd hazard a guess they might be 12 bits. Might even be encoded as direct reading in degrees.

    See...
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    I think from memory, the drop in location is not...

    I think from memory, the drop in location is not just the same place on one revolution of the lead screw, but a precise location on the lead screw over multiple turns.

    What about hooking up a...
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    Measuring air flow in ducts, as Eskimo said, ...

    Measuring air flow in ducts, as Eskimo said, I would have probably bid on something like that, I have a weakness for instrumentation.

    You could hang it out the window of your car and...
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    I'd go for a visit to Mainridge. :) If you...

    I'd go for a visit to Mainridge. :)

    If you can't then here's a technique that works for small runs of thin gauge disks.


    1. Clamp up a bit of angle iron in the drill press, make sure it...
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    I'd be looking at an oxy-acetylene type of...

    I'd be looking at an oxy-acetylene type of circular saw.

    Seriously, if I had to do something like that, I'd be thinking about putting it on the mill horizontal arbour with a carbide slitting...
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    I think they have my ip address or email...

    I think they have my ip address or email blacklisted. :) It doesn't matter what mailing address I specify.

    I don't have anything I particularily need just now.
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