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Type: Posts; User: BobL

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  1. Replies
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    They will probably benefit from a 20 minute 100º+...

    They will probably benefit from a 20 minute 100º+ bake out in an oven. Then store them in a sealed dry container to keep out the moisture.
  2. An easy/nice way to make a small Al tank is to...

    An easy/nice way to make a small Al tank is to use a section of large Al tube.
    This is the auxiliary oil tank on one of my chainsaw mills. It's made from 100mm ID x 3 mm thick Al tube and holds...
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    According to this...

    According to this https://solarbatterysupermarket.com.au/products/copy-of-13-3kwh-alpha-smile5-battery the battery is Li - ion and has a 10 year, 6000 charge/discharge cycle, guarantee
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    There was no stores branch at work and would have...

    There was no stores branch at work and would have had to order them myself. At that stage I had only used the balance once and was not sure if I would use it that much. I use it mainly to weigh...
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    Old balance recovery.

    Just before I retired in 2012 I rescued a 0-10kg (good to 1g), Scientific HD Mettler balance from a skip at work. The balance had a 1966 dated stocktake sticker on it and is built like a brick...
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    The bolded comment above really irks me. The...

    The bolded comment above really irks me. The whole idea of testing and tagging was introduced because of things like damaged power tools and extension cords as used on worksites etc. I can...
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    Just a heads up that lemon juice is anywhere from...

    Just a heads up that lemon juice is anywhere from 3 to 8% citric acid and seeing as it'll be tricky to work out what's in any specific juice you're better off using citric acid powder and making up a...
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    Before the mens shed I used to attend had a...

    Before the mens shed I used to attend had a member who was a licenced sparky I did some electrical/mechanical work on their old machines and would then tag these machines "out of use" until a...
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    It's definitely not Kosher.

    It's definitely not Kosher.
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    522

    Back in 2018 I did an experiment and post on the...

    Back in 2018 I did an experiment and post on the solubility of mild steel in acetic, citric and oxalic acids and how well they lasted afterwards without rusting.
    For anyone that is interested here...
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    While you're at it I would strongly recommend...

    While you're at it I would strongly recommend adding a swarf tray to reduce the amount of swarf that ends up on the floor, shoes, and gets tracked inside your house.
    And if you are going to add...
  12. Some good ideas there, I especially like the...

    Some good ideas there, I especially like the flexible one.

    I have a bunch of the narrow commercial ones that have a hex shank but the problem I find with using these in a conventional battery...
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    Accurately measuring resistances of less than a...

    Accurately measuring resistances of less than a couple of ohms is fraught with problems as simple contact resistance can be as much as around 0.5Ω . If it's rated at 12V @50A then the resistance...
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    +1 for what JH says. A starter motor would...

    +1 for what JH says.

    A starter motor would have to be rewound (to much higher resistance) to make it half-suitable.
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    +1

    +1
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    You need to clearly spell out in you tenancy...

    You need to clearly spell out in you tenancy agreement whether your animals are allowed into the house.
    If there's nothing about "animals in house" in the agreement, in your case the landlady can...
  17. Thread: Table rock

    by BobL
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    1,297

    I agree with Steve about floors not being flat ....

    I agree with Steve about floors not being flat . All of my tables and benches have adjustable feet to accommodate this.

    My mate ran an engineering business making large HD mining gear.
    To get...
  18. Some of those tables are connected to the base by...

    Some of those tables are connected to the base by a narrow bit of cheesium which can snap off like a rotten carrot if not handled gently. Even the cast iron ones connected ones cant take a lot of...
  19. What sort of flap disc did you try? I'd be using...

    What sort of flap disc did you try? I'd be using something like the 3M Cubitron wheels, very fast and last longer than Alox flap discs.
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    As well as their alloy components, the magnetic...

    As well as their alloy components, the magnetic properties of SS (and most steels) also depends on the type of heat treatment and the amount of cold working they have undergone. However, in general...
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    I've tried doing it a couple of times. My missus...

    I've tried doing it a couple of times. My missus had all the diamond tipped gear for drilling, cutting and shaping glass but nope - it shattered every time.
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    Sims metals in Welshpool will take batteries even...

    Sims metals in Welshpool will take batteries even with the acid and they will give you cash in hand in return.
    BUT
    First time transactors have to produced 100 points of ID and get registered....
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    After SWMBO died I had a lot of regrets (so many...

    After SWMBO died I had a lot of regrets (so many that they felt like they were overwhelming me) but I think I'm slowly getting over (some of) them - note this does not mean "forgetting them". What...
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    All the best for your retirement. I've been...

    All the best for your retirement.

    I've been retired now for 10 years and never missed work for a second. While initially I missed the work skips I ended up with so much stuff it started to become...
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    Looks good Nigel. I'm curious as to why you...

    Looks good Nigel.

    I'm curious as to why you say an old version of Cura as the version I'm running (5.4, latest is 5.5) has the Cocoon Modelmaker in the list of supported printers?

    One of the...
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    That strongly suggests you have it wired...

    That strongly suggests you have it wired incorrectly.
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    Nailed it. :D

    Nailed it. :D
  28. There are dozens of reasons to, where possible,...

    There are dozens of reasons to, where possible, transit from ICE to other forms of transport energy and here are 3 to think about

    1) Despite repeated warnings from health experts exhaust air...
  29. Bar0n you are somewhat out of date on the...

    Bar0n you are somewhat out of date on the relative cost of the Battery in an EV
    404082
    2 years ago Tesla started makings its own Batteries for about US$115 /kWHr so a 75kW hour battery costs Tesla...
  30. Yep, don't know about other EVs but Teslas are...

    Yep, don't know about other EVs but Teslas are designed to fall apart on collision which is how they protect the occupants.
    Anyway most ICE vehicles today are in the same boat.

    In 2010 an idiot...
  31. Ive seen a few Li battery fires but am more than...

    Ive seen a few Li battery fires but am more than happy to drive around sitting on top of a 75kWhr Li Battery.
    FWIW Teslas have amongst the lowest rate of accidents of any motor vehicle especially if...
  32. I agree EVs are not for everyone, but after...

    I agree EVs are not for everyone, but after watching 3 of my brothers buy them and going for rides and test drives I drank the kool aid 3 months back, and and now love my EV. Every time I drive past...
  33. Not MW but demonstrates safety required with compressed gasses

    WARNING: The Video Link shows death of a person.
    https://youtu.be/RkVSdBUIaXw?si=XlpUo6FPByH4ASJa

    Interesting that some of the video comments think this an electric vehicle.

    404071
    404072
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    Looks similar to a 10" Atkins driver I spruced up...

    Looks similar to a 10" Atkins driver I spruced up back in 2015
    https://metalworkforums.com/f65/t193863-atkins-grinder

    I wasn't using it so I gave it to my Brother who is still using it.
    ...
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    The more noticeable the security features are the...

    The more noticeable the security features are the more you're likely to be signalling that there's something worth pinching.
  36. The better types of knurling tools are those that...

    The better types of knurling tools are those that put the least load on the tool post and these are the clamping type knurling tools.
    The type that puts the greatest load on the tool post are the...
  37. I and industrial users will mainly be using epoxy...

    I and industrial users will mainly be using epoxy or urethane paints.
  38. What's the intended use? - 6" long suggests some...

    What's the intended use? - 6" long suggests some sort of chisel?
    If so, just be aware that at 1/4" in diameter it will be brittle, hence potentially dangerous for use as a chisel.
  39. Usually its a pale yellow powder so I'd say...

    Usually its a pale yellow powder so I'd say there's something else in the Deck Cleaner.
    It's possible to paint straight over the top of pure Oxalic acid powder as it binds well to the paint
  40. Yes 10:1 or 10% by weight usually is enough so...

    Yes 10:1 or 10% by weight usually is enough so 100g per litre of water.
    Even though it's found in leafy vegetables like rhubarb, it's very mildly toxic so wearing gloves is a good idea.
  41. If you are painting over the surface, then Oxalic...

    If you are painting over the surface, then Oxalic acid is the go and is used in large scale industrial applications since it does not need to be rinsed and the treated unpainted surface remains rust...
  42. I find soaking works much better than just...

    I find soaking works much better than just painting on any rust converter.
  43. Thread: Linishing Belts

    by BobL
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    538

    The Cubitrons are definitely the best, especially...

    The Cubitrons are definitely the best, especially the low grit sizes for shaping, and I'd love to get them in my size (150x2000) but they cost $47 each and you have to buy a pack of two. For general...
  44. Talk to Bob Thomas.

    Talk to Bob Thomas.
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    PM me and we'll go from there.

    PM me and we'll go from there.
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    For Al, meths wins hands down, it evaporates and...

    For Al, meths wins hands down, it evaporates and leaves no residue.

    For Al the purpose is to keep the blade cool enough so that the teeth don't gall which is what ruins the finish.
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    If that's the case then the motor simply won't be...

    If that's the case then the motor simply won't be as efficient as a proper VFD - they claim 70 - 90% efficiency but my guess is it will be worse than this.
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    YEs and No, it sounds like you need to have a...

    YEs and No, it sounds like you need to have a read os this PDF on VFD for newbies.
    https://www.woodworkforums.com/f271/vfds-newbies-232742
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    This is the waveform of a Huanyang VFD output...

    This is the waveform of a Huanyang VFD output while driving a motor I took back in 2014?.
    The overall wave is sinusoidal but it's made up of lots of little square waves. The multiple square waves...
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    That unit you refer to appears to have a fixed...

    That unit you refer to appears to have a fixed frequency and fixed max current and relies on the motor and any contractor itself to perform thermal/overload protection.
    This means if you use them...
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