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Type: Posts; User: pippin88
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30th Mar 2024, 05:26 PM
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Stiffness (modulus of elasticity) is essentially...
Stiffness (modulus of elasticity) is essentially the same between different types of steel. Max of about 10% difference (stainless lower than carbon steel)
Tensile strength / modulus is different -
14th Mar 2024, 02:47 PM
Thread: Machinery scrap @ Beaufort VIC
by pippin88- Replies
- 14
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- 737
Always love the "help me save it from scrap"...
Always love the "help me save it from scrap" listings that then want double / triple / 10 times the scrap price
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13th Mar 2024, 07:01 AM
Thread: Importing a Proxxon PD 400 Lathe
by pippin88- Replies
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- 1,163
Over $1000 imported, you have to pay GST, any...
Over $1000 imported, you have to pay GST, any duty (may be zero, look up tariff exemption and find the right code if there is an exemption) and a processing fee.
Processing fee on my recent... -
15th Feb 2024, 09:23 AM
Thread: Your latest project
by pippin88- Replies
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Sticky: What are you going to use it for? That's a...
What are you going to use it for?
That's a very high gantry but a short Z axis?
Stiff would be vastly improved by triangulating the gantry uprights -
28th Jan 2024, 11:36 AM
Thread: 2" Slab top steel bench
by pippin88- Replies
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Is the top really 2 inch solid? From the...
Is the top really 2 inch solid?
From the underside picture it looks like it could be thinner plate on top of beam and with a skirt all the way around -
21st Jan 2024, 02:02 PM
Thread: ISO50 Tool Holders
by pippin88- Replies
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What about BT50? ISO = BT (but ISO does not...
What about BT50?
ISO = BT (but ISO does not have drive dogs), at least at 30 taper -
20th Jan 2024, 12:21 PM
Thread: Drill bit size for dowels
by pippin88- Replies
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If you want an accurate dowel hole, it should be...
If you want an accurate dowel hole, it should be reamed
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15th Jan 2024, 10:24 AM
Thread: Surface Plate recommendation
by pippin88- Replies
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120mm thick is not nearly enough for a 2400x1200...
120mm thick is not nearly enough for a 2400x1200 surface plate - will sag
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13th Jan 2024, 09:10 PM
Thread: Surface Plate recommendation
by pippin88- Replies
- 30
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What do you want to do with it?
What do you want to do with it?
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7th Nov 2023, 11:09 AM
Thread: Hafco EB-320 bandsaw - eating blades
by pippin88- Replies
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Excessive tension on the blade guides can cause...
Excessive tension on the blade guides can cause blade failure. If the guides squeeze the blade too tight, they can deform it. The teeth/ gullets should not be in the guides and so you get...
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1st Nov 2023, 10:00 PM
Thread: Gantry design questions
by pippin88- Replies
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Just use RHS / SHS steel. Epoxy and bolt on some...
Just use RHS / SHS steel. Epoxy and bolt on some riser bars for your linear rails. Flatten them
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26th Oct 2023, 09:51 AM
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I agree with Michael - better to use wider...
I agree with Michael - better to use wider 'shims'
Looks like there is some soft metal between the nuts and chuck jaws - good as nuts are rarely truely flat -
2nd Oct 2023, 03:23 PM
Thread: Suggestions for theif proof gate lock
by pippin88- Replies
- 61
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You will never stop a determined thief with time...
You will never stop a determined thief with time and equipment (cordless grinders mean just about anything is breachable).
But most theft is low hanging fruit, opportunistic stuff.
A... -
2nd Oct 2023, 03:15 PM
Thread: Can ebay allow this to happen?
by pippin88- Replies
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I would be wary buying a machine tool from a...
I would be wary buying a machine tool from a seller called Fashiondesign247...
Sometimes the scam is to build an account with dort cheap items, building a large feedback history.
Then switch to... -
1st Oct 2023, 06:44 PM
Thread: Another gantry
by pippin88- Replies
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Interesting lifting mechanism, but I'm a bit wary...
Interesting lifting mechanism, but I'm a bit wary about it.
By pushing up, I feel you increase the torsional load on the gantry beam with any off centre load. Worst at high extension. When there is... -
17th Aug 2023, 12:51 PM
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Bob, entirely true, but for someone without good...
Bob, entirely true, but for someone without good experience with VFD, I thought best to keep it simple.
I.e. the point is you will run into issues if you just plug a full 3 phase machine that has... -
16th Aug 2023, 01:38 PM
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Are you talking about VFD (variable frequency...
Are you talking about VFD (variable frequency drive)?
You can run a smaller motor on a larger VFD. But within limits - some VFD will only go down to 50% of rated output for example.
Make sure... -
30th Jul 2023, 11:53 AM
Thread: Linear Rails
by pippin88- Replies
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Brands are not interchangeable (bearing cars and...
Brands are not interchangeable (bearing cars and rails)
You can re-ball them, as you can with pretty much any bearing. But you need precisely the right size balls. And the right number per circuit... -
30th Jul 2023, 08:27 AM
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I would be much more interested in length of...
I would be much more interested in length of warranty for VFD than for motor.
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22nd Jul 2023, 10:30 PM
Thread: DIY Lathe, don't roll your eyes...
by pippin88- Replies
- 64
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What do you think the standard tolerances for a...
What do you think the standard tolerances for a lathe are?
Send out for machining and bolt together ain't going to hit any decent tolerance.
Do you just want a shorter lathe?
Buy a lathe with... -
22nd Jul 2023, 12:16 PM
Thread: DIY Lathe, don't roll your eyes...
by pippin88- Replies
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Manual lathe or CNC? 60mm is a large spindle...
Manual lathe or CNC?
60mm is a large spindle bore. -
20th Jul 2023, 04:25 PM
Thread: Aliexpress Woes
by pippin88- Replies
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I buy a lot of stuff on Aliexpress Much prefer...
I buy a lot of stuff on Aliexpress
Much prefer AliExpress to eBay
A couple of times an item has been missing - seller has fixed in each cause, though one insisted I pay an 10 cents for postage... -
5th Jul 2023, 07:28 PM
Thread: Hydroponic nutrient gal tank design
by pippin88- Replies
- 57
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Yes. And make it relatively easy to remove for...
Yes.
And make it relatively easy to remove for cleaning. -
4th Jul 2023, 11:47 AM
Thread: Hydroponic nutrient gal tank design
by pippin88- Replies
- 57
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I think a good quality plastic tub within a metal...
I think a good quality plastic tub within a metal structural frame will be cheaper, easier, and won't have issues with leaking.
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1st Jul 2023, 06:53 PM
Thread: Mig wire and rust
by pippin88- Replies
- 19
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- 2,536
I'm surprised you have such a problem at...
I'm surprised you have such a problem at Charlestown. When I lived in Bar Beach it was shocking, leave something uncovered for a day or two and it got a fair bit of rust, but that was a few hundred...
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17th Jun 2023, 06:08 PM
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Very generous Kryn
Very generous Kryn
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9th Jun 2023, 02:22 PM
Thread: Your favourite tooling supplier
by pippin88- Replies
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Sticky: AliExpress search is crap I often use google...
AliExpress search is crap
I often use google to search within AliExpress
Eg. 12.5mm reamer site:AliExpress.com
Often looking through the related products below a listing will get you more... -
2nd Jun 2023, 09:15 AM
Thread: Extreme cutting close up
by pippin88- Replies
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BreakingTaps is a genuine guy, not someone faking...
BreakingTaps is a genuine guy, not someone faking stuff for YouTube views. Watch his other videos, there is great stuff there. It is definitely not click bait.
I haven't had a chance to watch the... -
25th May 2023, 04:50 PM
Thread: Losing weight
by pippin88- Replies
- 61
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Marc, I used the word thesis (meaning = a...
Marc,
I used the word thesis (meaning = a statement or theory that is put forward as a premise to be maintained or proved).
You posted this thread, and have added further posts that a carnivore... -
24th May 2023, 10:15 PM
Thread: Losing weight
by pippin88- Replies
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Marc, Please note that I am not saying "you...
Marc,
Please note that I am not saying "you are wrong". I am suggesting that people should think critically about these issues.
Your thesis appears to be that switching to the carnivore diet or... -
23rd May 2023, 11:53 PM
Thread: Losing weight
by pippin88- Replies
- 61
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Marc, the link you provided does not say they do...
Marc, the link you provided does not say they do little exercise.
It says they do much more activity than the average in the west. Have a look again.
To my earlier point about activity:... -
23rd May 2023, 09:05 PM
Thread: Losing weight
by pippin88- Replies
- 61
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Modern society does NOT move more. Go back to...
Modern society does NOT move more.
Go back to days before widespread mechanisation of basic labour.
The amount of energy required to do a load of washing etc etc.
"An adult of good fitness is... -
23rd May 2023, 08:56 PM
Thread: Losing weight
by pippin88- Replies
- 61
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- 7,002
There is no ONE answer. And like most things in...
There is no ONE answer. And like most things in life, if someone tells you they have the single magic answer, they usually have another motivation (usually making money) or are a zealot.
It is... -
16th May 2023, 08:30 PM
Thread: ACCUD measuring tools
by pippin88- Replies
- 12
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A lot of digital calipers chew through batteries...
A lot of digital calipers chew through batteries unfortunately.
I don't know why a true off switch is not standard.
On most models the on/off just turns the screen on/off. Any movement will... -
13th May 2023, 03:01 PM
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Grahame - apologies, I missed the existence of...
Grahame - apologies, I missed the existence of the electrical sub-forum. Thanks for moving to the appropriate area.
I will definitely use good quality brands.
I already have a sub-board in the... -
12th May 2023, 08:14 PM
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- 7
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Upgrading electrical supply to shed - anyone know a decent electrician in Newcastle?
I want to get some bigger circuits / sockets in the shed to run some decent size gear. Currently just have 10amp outlets.
I need one 15amp, and one 32amp (or 25 amp) outlet.
I've tried going... -
6th May 2023, 02:01 PM
Thread: Fixed Gantry CNC
by pippin88- Replies
- 8
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Yes. Do it.
Yes. Do it.
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5th May 2023, 07:01 PM
Thread: Painted RHS for a gantry
by pippin88- Replies
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How are you going to secure it to the trees? That...
How are you going to secure it to the trees? That would be my major concern / the weak point.
Or will you use steel uprights and secure to the trees for lateral support?
4m is a long gantry.... -
3rd May 2023, 01:48 PM
Thread: I'm concerned about laser welding
by pippin88- Replies
- 5
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New technology always brings change. Will...
New technology always brings change.
Will laser welding remove the need for all the other welding skills and knowledge? I doubt it
Fit up
Managing distortion
Weld requirements / penetration etc... -
28th Apr 2023, 08:51 AM
Thread: Just Tools Specials
by pippin88- Replies
- 4
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Yep
Yep
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7th Apr 2023, 05:38 PM
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My experience is that if you pull about anything...
My experience is that if you pull about anything remotely precise, you should do it in a small clean perfectly empty room. Because otherwise you never find that bloody spring!!!
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16th Oct 2022, 07:37 PM
Thread: Software for 3D design
by pippin88- Replies
- 32
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I have not used FreeCAD due to the topological...
I have not used FreeCAD due to the topological naming issue
https://wiki.freecadweb.org/Topological_naming_problem
Major efforts are underway to fix this.
I currently use a Maker version of... -
6th Oct 2022, 12:06 PM
Thread: Ducted air con repair story
by pippin88- Replies
- 18
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I've got units on a roof unfortunately. Narrow...
I've got units on a roof unfortunately. Narrow block and no other option really.
Issues with outdoor unit.
Service tech put one boot on roof and didn't go further. I don't blame them as I... -
9th Sep 2022, 05:49 PM
Thread: Question for the stepper motor experts
by pippin88- Replies
- 6
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Microsteps are for smoothness. They are not...
Microsteps are for smoothness. They are not reliably accurate.
There are some explanations of the electrickery psychics available via your nearest search engine that are better than I can provide. -
21st Aug 2022, 10:36 PM
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NSW Sold to Kryn
Sold to Kryn
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21st Aug 2022, 09:49 PM
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NSW Kryn, Are you interested? Might list...
Kryn,
Are you interested?
Might list elsewhere if you are not. -
20th Aug 2022, 01:12 PM
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Stub drill is for non deep holes, or starting...
Stub drill is for non deep holes, or starting holes.
Stub drills are much more rigid.
In CNC, often a hole is started with a stub drill then tool change for a longer drill. Helps with... -
18th Aug 2022, 09:08 PM
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- 5
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NSW Quick Change Tool Post 0XA for small lathe (Newcastle)
Quick Change Tool Post (QCTP)
Wedge type post. From Little Machine Shop
Suits small lathes (designed for lathes with up to 8" swing). I used this on a 7x14 lathe. Been sitting oiled in storage... -
17th Aug 2022, 11:08 PM
Thread: Turret mill for sale
by pippin88- Replies
- 7
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- 1,154
Insane
Insane
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28th Jun 2022, 08:44 PM
Thread: Project POND
by pippin88- Replies
- 46
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- 8,448
Put a roof on the dirty room and storage above?
Put a roof on the dirty room and storage above?