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Type: Posts; User: BobL

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  1. Replies
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    I've had access to a chainsaw chain grinder for...

    I've had access to a chainsaw chain grinder for about 15 years but I have only ever used it a few times, even when cutters got large nicks taken out of them because when this happens I tend to...
  2. Interesting. At last count I've visited 28 mens...

    Interesting. At last count I've visited 28 mens sheds in WA and all bar a couple do metal work of some form or another. Some sheds (especially country shed) have extensive mechanical workshops, a...
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    Lumens per Watt start at about 80 for older and...

    Lumens per Watt start at about 80 for older and basic LEDs.
    Newer LEDs and most LEDs currently for sale are in the 100 - 120 Lumens per Watt.
    The latest research LEDs (not usually in production)...
  4. I don't want to do racingtadpole put of a...

    I don't want to do racingtadpole put of a potential job here but another source off this type of work are men's sheds. If course they will expect to be paid appropriately.
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    Given its USB powered its going to be a max of...

    Given its USB powered its going to be a max of 10W so about 1000 lumens max.

    I just ordered a 240V 2600 lumen ringlight - hope it's not too bright.
  6. Looks like a project groups of supervised senior...

    Looks like a project groups of supervised senior primary kids could perhaps help assemble

    Adult buys some sheets of galv mesh and cuts up and sands cut edges.
    Kids assemble using galv wire grips...
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    NOICE! How many watts/lumens?

    NOICE! How many watts/lumens?
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    I agree but if I also use it to store some of my...

    I agree but if I also use it to store some of my my offcuts stash that will easily add a couple of hundred kg to the weight so the 5mm will come in handy.
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    Thanks, when I say move it around I don't mean...

    Thanks, when I say move it around I don't mean wheeling it around the workshop, just pulling it a couple of 100 mm away from the shed wall and then back again but I take your point about it being top...
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    Another design question

    I have an old muffle furnace I'm attempting to resurrect.
    I scored this thing 8 years ago and have had have had no room to fit it into my shed.
    Attempts to convince SWMBO to let me install it on...
  11. I don't have a lot of experience compared to...

    I don't have a lot of experience compared to others on this forum but here is my take on TC tooling for a small lathe.

    I was initially hesitant to use TC inserts because a number of pundits ...
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    Are you sure you have your "series" and...

    Are you sure you have your "series" and 'parallel" right.

    Depending on the grunt of the power pack, two devices in series will usually draw half the current compared to when they are in parallel.
  13. In most cases I reckon sanding above about 400 is...

    In most cases I reckon sanding above about 400 is a waste of money.
    If you want a shiny surface it's probably better to jump from 400 to a buffing wheel.

    But just like fine abrasive paper a buff...
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    soap/rag/water won't do much. Some dust will be...

    soap/rag/water won't do much. Some dust will be stuck onto the galv. You'll need a stiff brush of some kind, I suggested brass but you may need something stiffer. Fine abrasive paper eg 240grit my be...
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    I assume wooden t posts are going onto those...

    I assume wooden t posts are going onto those brackets/stirrups?
    If so, I would have considered drilling holes in the bottom of the posts rather than cutting the bolts.
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    Rather than oxy it looks like an abrasive thin...

    Rather than oxy it looks like an abrasive thin kerf cutting wheel cut to me. The Galv on the nut is covered in metal dust which will rust but its probably OK but replacing them would be a reasonable...
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    I'd start by covering up the surrounding metal...

    I'd start by covering up the surrounding metal and only allowing the exposed cut surface to show and then smooth the rough cut surfaces off with a flap wheel on an angle grinder.
    Avoid getting the...
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    Should have been 'copy and paste" I usually...

    Should have been 'copy and paste"

    I usually insert units into text that way, especially units that have a longish string, eg g/m^3 etc - instead of typing tham every time, type them once and then...
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    Crickey! you had a drill press. I started MW with...

    Crickey! you had a drill press. I started MW with a single speed B&D drill, a hacksaw, a borrowed single current output welder, and a couple of files. At the time my bench was a door on a couple of...
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    Yep. Perth and Adelaide are pretty similar...

    Yep.



    Perth and Adelaide are pretty similar humidity levels with Perth maybe a bit more humid in summer and less so in winter but microclimates can make a big difference. My compressor...
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    RE: "g's and mg's" Wmoops - too much cut-n-paste...

    RE: "g's and mg's"
    Wmoops - too much cut-n-paste

    5C air has a max water vapour content of of 6.8 mg/L so @3C its about 6 mg/L - but that thats at 100% humidity - in practice it's better than...
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    The amount extracted depends on the water removal...

    The amount extracted depends on the water removal process.

    The water filter/reg as shown in the pic by the OP uses a bronze/brass membrane witch catches fine droplets and they drip into the small...
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    At 20C the most water air can carry (100%...

    At 20C the most water air can carry (100% humidity) is ~17.3 mg/L
    Assuming a 50% humidity that converts on ~8.6 mg/L which typically what shows up on my "outside my shed" moisture sensor.
    Inside a...
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    I have those regs/traps at the ends of two arms...

    I have those regs/traps at the ends of two arms of my reticulated comp air network. One is on the a 12m from the compressor, adjacent to where I spray as well as near where use a Plasma cutter, and...
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    Typically I use jog to slowly rotate specific...

    Typically I use jog to slowly rotate specific sides/point of workpiece or bits into view eg for checking clearances etc Don't use it much but glad I have it on my mill. Must set it up on my lathe...
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    So, trying to drive two lamps from the one pack...

    So, trying to drive two lamps from the one pack - I expect that will have something to do with what you are experiencing.
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    Are you using the power pack that's supplied in...

    Are you using the power pack that's supplied in the base of the lamp or something else?
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    Not really, some metals can be made marginally...

    Not really, some metals can be made marginally stiffer without being made harder.

    For a technical discussion have a look at this...
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    That's a real PITA when using angle grinders and...

    That's a real PITA when using angle grinders and was a primary driver for me to make the the kerf cut off table saw.
    392506
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    This chart is a guide I generated some time back...

    This chart is a guide I generated some time back from data I extracted from the Ellis Bandsaw Co website in the US.

    Remember it's only a guide for optimised cutting.

    The right hand vertical...
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    Good to know. I also use that orientation with...

    Good to know. I also use that orientation with angle whenever I can.
  32. The pot on my lathe SAJ VFD did the same thing. ...

    The pot on my lathe SAJ VFD did the same thing.
    Turned out to be dirt from my fingers leaking down into the pot. I replaced the pot and all was OK.
    I don't know if it dod it again because I...
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    I don't have any slippage probs with the MT2's on...

    I don't have any slippage probs with the MT2's on my Hercus
    A moderate tap home with a wooden mallet is usually enough.
    The MTs I have trouble with are the 13.5 - 14mm MT1 bits in my MT1-MT2...
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    Sticky: Another "project" that barely qualifies as a...

    Another "project" that barely qualifies as a project.

    Before the bathroom reno, throwing open the bathroom door could result in a flat section of the door colliding with the toilet seat, so a...
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    This electric actuator was from a hospital bed. ...

    This electric actuator was from a hospital bed.


    https://youtu.be/fvY7ejp_Iao

    I didn't removed it from a bed - found it (and several others) in the remnants of a hospital workshop which was...
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    I hope so.

    I hope so.
  37. Replies
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    Mounted the Master cylinder on the saw mill this...

    Mounted the Master cylinder on the saw mill this morning and 2500 PSI pressure held for more than an hour - seems like the problem has disappeared.
    Just wait - it will reappear again when I start...
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    Found a pic of part of my mesh shelves showing...

    Found a pic of part of my mesh shelves showing how it can store a lot of tooling in a small space.
    392349
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    Depends on a few things like strength...

    Depends on a few things like strength requirement, material thickness, rivet size etc

    Maybe show us what you are doing and we can take it from there
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    Set the pressure to 2500psi about this time last...

    Set the pressure to 2500psi about this time last Friday (3days ago) arrive and it has has not dropped below 2450.
    I think we're good to go.
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    It depends on the size of the object but most...

    It depends on the size of the object but most fully hardened heat treatable steels will lose between 2 and 5 points of RC hardness at around 220C
    BUT
    I also doubt 220C will do much tempering in...
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    That looks pretty good to me and was one of the...

    That looks pretty good to me and was one of the ways the instructor at the blacksmiths course I attended blackened got us to blacken the tools we made. The other method was dunking into a light...
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    I've tried this method (in the kitchen oven) and...

    I've tried this method (in the kitchen oven) and it does indeed work and looks real nice, but it did generate some smoke so if you have an outside BBQ oven suggest using that instead of an oven....
  44. Thread: Drill Press Table

    by BobL
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    463

    If you can't find one, given you're going to add...

    If you can't find one, given you're going to add a significant X-Y table and then a extra slotted table on top of that, the weight is then going to be very significant. In that case what about just...
  45. Thread: Linisher Finished

    by BobL
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    $5 an hour is my average rate - of course that...

    $5 an hour is my average rate - of course that doesn't include the value of the self satisfaction arising "if' the result works out.
  46. Thread: Drill Press Table

    by BobL
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    463

    A picture of the current table might inspire some...

    A picture of the current table might inspire some idea?
  47. Thread: Drill Press Table

    by BobL
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    463

    Is your current DP table a "one-piece table"?...

    Is your current DP table a "one-piece table"?
    Most tables are in 2 or 3 pieces, ie
    A) "collar" around column,
    B) arm the extends out, and allows for rotation in the vertical direction
    C) then...
  48. I seriously doubt their claims of 60 CFM at 150...

    I seriously doubt their claims of 60 CFM at 150 psi through a 6m run of 3/8" diam pipe.
    I put their claims into an on-line pressure calculator and the computer says, "Eeet weel not vork"
    AT 44 CFM...
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    This my home made effort on those retractable...

    This my home made effort on those retractable wheels.
    https://metalworkforums.com/f65/t202487-surface-plate-bench

    A lot more work, but a lot easier than winding fiddly little red wheels
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    I second the older filing/office cabinets being...

    I second the older filing/office cabinets being significantly sturdier than the newer ones.
    It's not aways definitive but I've found the dark grey ones are usually the sturdier while the beige and...
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