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Type: Posts; User: TommyGMachining

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  1. Replies
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    All good advice and to drain the water out of...

    All good advice
    and to drain the water out of the cylinder, a trick I've seen is to lay it on its side and poke a straw into the air pocket at the top
    This stops the water / air gurgling and...
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    How to make a dog clutch

    If anyone is interested, I've created a video on cutting a dog clutch (shameless self promotion:D)
    If your geometry allows, there is a simple method to cut both sides of the teeth with each pass
    ...
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    Mill Powerfeed Project

    This is the first part of my mill powerfeed project to upgrade my Hercus mill
    Mainly a focus on electronics with the upcoming videos focusing more on the mechanical side
    381561...
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    All depends on what you are doing and are used...

    All depends on what you are doing and are used to.
    I can only speak from my experience as a novice CNC guy

    I love modelling in solidworks, it's so easy for me, I've been using SW for a couple of...
  5. Check your gib screws, I'd say they have come...

    Check your gib screws, I'd say they have come loose
    It's surprising how quickly a bit of chatter can loosen them
  6. Yeah the price has recently dropped and there is...

    Yeah the price has recently dropped and there is also a big Cincinnati T&C grinder in the same area for the same price
    That's why I wanted to get an idea before getting the wrong tool

    I think I'm...
  7. Surface Grinder or T&G Grinder, which is best for adapting?

    I'm keeping an eye out for either machine. Really only want one due to floor space.
    There's a tool and cutter in the area and wonder if I should snatch it up or wait for a surface grinder

    Now I...
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    100% agree with this rule of thumb For mild...

    100% agree with this rule of thumb
    For mild steel with HSS I use 9000/ diameter

    For anyone interested in where this comes from

    s = pi * D *R

    s = surface speed ie 30 m/min for steel
    pi =...
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    From the ebay page it's 340 kg shipping weight...

    From the ebay page it's 340 kg shipping weight
    Would quite easily fit in a trailer / ute
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    Well I went without the bracing, it's not too bad...

    Well I went without the bracing, it's not too bad to be honest
    Cheers guys for responses
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    This is good to know I suspected 3 points should...

    This is good to know
    I suspected 3 points should be used and the other 2 barely in contact
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    Plate is 600 x 600 (roughly 23 inch sides) I...

    Plate is 600 x 600 (roughly 23 inch sides)
    I agree, flex would likely be negligible as it is 100 thick (4 inches)

    The frame just looks odd to me, and it's probably more of a concern that it may...
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    Surface Plate Stand Bracing

    I've just recieved this surface plate stand which is steel angle and flat bar construction.
    It has no bracing which in my head means the frame will be much less rigid
    Clearly thought has gone into...
  14. You have the right screw to tighten the x axis....

    You have the right screw to tighten the x axis. The screw is a push pull that works on a tapered gib

    I'm assuming the difficult 50 mm is at the extreme end of the travel?
    It is normal for the...
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    I'd be interested in some turcite It seems you...

    I'd be interested in some turcite
    It seems you can only buy it in large sheets

    I'm about to make a riser block for my hercus mill and I want the dovetail either cast iron or another bearing...
  16. Do you have any photos of the travelling...

    Do you have any photos of the travelling steadies?
    I'd be interested in getting one
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    I've always had problems with my model C (more me...

    I've always had problems with my model C (more me than the lathe)
    My biggest problem was that I had a scare early on and was too cautious, from then on running at the lowest speed etc and couldn't...
  18. Ah you are right re carbon fibre I had it wrong!...

    Ah you are right re carbon fibre I had it wrong! I was thinking along the lines of graphene / carbon nanotubes, as you say, only the fibres themselves are stiff
  19. I'd say this will be flimsy regardless of the...

    I'd say this will be flimsy regardless of the material
    Structurally it would hold up weight, but it would rock around like crazy under sideways loads

    Fun fact about steel: All cabon steels have a...
  20. From memory when I saw mine ages ago it would be...

    From memory when I saw mine ages ago it would be a 45°ish cone
    I'll measure when I get home
  21. Not going to lie you have gotten me thinking...

    Not going to lie you have gotten me thinking about this now, probably not a bad feature as I do need to nudge the gear train slightly when changing gears
    I'd also need to crate a clutch of some sort...
  22. Ha ha it does look like a hand crank lol It's...

    Ha ha it does look like a hand crank lol
    It's actually a spring loaded selector pin to choose between metric and imperial threading
    During design I was running out of areas to mount the selector so...
  23. Homemade Quick Change Gearbox Complete

    I've finally finished my quick change gearbox for my lathe!
    It's been a 8 month long project from design to completion

    Designed from scratch, made from scrap!

    I have a build series on youtube...
  24. Maybe I just need to look out for a Model A...

    Maybe I just need to look out for a Model A Hercus!
    You guys are talking about a keyway in the leadscrew, how does that fit in with the half nuts? (I'm picturing a full length key with a gear that...
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    Sorry only just saw your reply I'm up on the NW...

    Sorry only just saw your reply I'm up on the NW coast Ulverstone / Devonport area
    It's a great spot
  26. Model A Apron on Model C Hercus Lathe?

    Random question out of curiosity
    I have a Model C lathe with no power crossfeed, but I see Model A aprons come up on gumtree sometimes

    Is it possible to mix and match, or is the leadscrew unique...
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    G'day from Tasmania

    I'm a hobby machinist and fabricator from Tasmania
    and youtuber 'TommyGun Machining'

    I am a Hercus fanboy and am constantly working on shop upgrades, fun and unusual projects
    I'm currently...
  28. Well hi Affetkak (Now TommyGun Machining) here!...

    Well hi Affetkak (Now TommyGun Machining) here! The plan is to start on the riser block and other mill upgrades once I finish my QCGB build
    Planning on talking through this one a fair bit more,...
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