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Type: Posts; User: OxxAndBert
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17th Apr 2024, 05:39 PM
Thread: Building a "Mongrel" Repeat O Meter.
by OxxAndBert- Replies
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I’d expect that if it drops against the...
I’d expect that if it drops against the restraining link under its own weight when picked up by the top - then it’s good.
Steve -
16th Apr 2024, 01:30 PM
Thread: Building a "Mongrel" Repeat O Meter.
by OxxAndBert- Replies
- 23
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- 1,405
Looking great! Almost time to cut the flexure. ...
Looking great! Almost time to cut the flexure.
Is there a particular diameter for the foot on the moving part? I assume that for checking a scraped surface it needs to be large enough that it... -
12th Apr 2024, 09:05 AM
Thread: Old lathe clean up Newbie
by OxxAndBert- Replies
- 80
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Dial indicators are much easier to use than...
Dial indicators are much easier to use than digital when checking for variation like when setting up a workpiece in the chuck. I don’t actually own any digital indicators but have used them in the...
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9th Apr 2024, 11:02 PM
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Angle as in rotating the tool post about its...
Angle as in rotating the tool post about its vertical axis.
I considered that maybe you’d reversed the direction of spindle rotation to just burnish the surface but thought the amount of material... -
9th Apr 2024, 10:15 PM
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Only other variables I can think of are tool...
Only other variables I can think of are tool height and angle.
Steve -
9th Apr 2024, 10:09 PM
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Feeding in the opposite direction or...
Feeding in the opposite direction or lube/coolant?
Steve -
9th Apr 2024, 08:25 PM
Thread: Beginners Advice
by OxxAndBert- Replies
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Beginners Advice
I know you asked specifically about a machine recommendation, but I think you might be jumping ahead a bit far at this point.
Roughly what size is the biggest panel you’d need to cut?
EDIT: I... -
9th Apr 2024, 02:36 PM
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Wow - that’s like looking through a museum. ...
Wow - that’s like looking through a museum.
Steve -
7th Apr 2024, 06:32 PM
Thread: Old lathe clean up Newbie
by OxxAndBert- Replies
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Don’t get too hung up on the holders and inserts...
Don’t get too hung up on the holders and inserts - you’ve got more than a good enough variety there to get you started.
You definitely don’t need a QCTP holder for every tool (but if that’s what... -
7th Apr 2024, 03:32 PM
Thread: Old lathe clean up Newbie
by OxxAndBert- Replies
- 80
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Sure thing. Just ordered some in the stainless...
Sure thing. Just ordered some in the stainless carbide flavour.
Steve -
6th Apr 2024, 10:35 PM
Thread: Old lathe clean up Newbie
by OxxAndBert- Replies
- 80
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- 2,901
Are all the tool holders for TN** inserts? The N...
Are all the tool holders for TN** inserts?
The N is negative rake. Nothing wrong with that and you generally get double sided inserts meaning more cutting edges/points per insert and they are... -
4th Apr 2024, 11:28 AM
Thread: Vernier callipers
by OxxAndBert- Replies
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Finally pulled my finger out and ordered a new...
Finally pulled my finger out and ordered a new pair of the iGaging calipers while they were on sale.
They arrived today - amazing how clean and clear the display is, and how tight they feel compared... -
30th Mar 2024, 10:46 PM
Thread: Bandsaw blades
by OxxAndBert- Replies
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I’ve been buying my zirconia linishing belts...
I’ve been buying my zirconia linishing belts online from Smith and Arrow.
Seem to last well and no breakages etc.
Steve -
30th Mar 2024, 10:43 PM
Thread: Vernier callipers
by OxxAndBert- Replies
- 44
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- 3,143
J&H - I have to agree about the battery cover and...
J&H - I have to agree about the battery cover and seal on the iGaging. They’re definitely a bit average, but it hasn’t got worse over time or actually caused any other issues on mine.
I only have... -
30th Mar 2024, 12:52 PM
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I doubt you’ll notice any difference between...
I doubt you’ll notice any difference between them.
Assuming you’re running the rod horizontally the easiest way to increase stiffness would be to slide a bit of tube over them.
Steve -
27th Mar 2024, 08:39 AM
Thread: Unimig Compressor for Plasme Cutter
by OxxAndBert- Replies
- 6
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Unimig Compressor for Plasme Cutter
Mate of mine has a plasma with inbuilt compressor that he bought about 10 years ago. Not sure what brand.
I didn’t come across any when I was looking for a cutter myself, but I see that weldclass... -
26th Mar 2024, 11:05 PM
Thread: Old stick welding rods
by OxxAndBert- Replies
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I’m still using the Eutectic 680’s I was given in...
I’m still using the Eutectic 680’s I was given in 1991. In fact I used some on the weekend to weld an axle flange on the old Landrover ute. The previous repair using the same rods lasted 10 years!!...
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21st Mar 2024, 08:37 PM
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Hafco have some push on/push off switches that...
Hafco have some push on/push off switches that might be able to be adapted
https://www.machineryhouse.com.au/spare-parts-switches
Steve -
20th Mar 2024, 09:43 AM
Thread: Advice on Oxy/Acetylene kit
by OxxAndBert- Replies
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Always good to meet other forum members in person...
Always good to meet other forum members in person and glad they’ve gone to a good home.
Happy welding!!
Steve -
15th Mar 2024, 05:00 PM
Thread: Advice on Oxy/Acetylene kit
by OxxAndBert- Replies
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- 1,925
Here’s the old torch set that’s soon heading to...
Here’s the old torch set that’s soon heading to its new home.
It’s “Elga”brand. It was already relatively old when I bought it in 1985, and was still working fine when I last used it around 2004 :)... -
15th Mar 2024, 12:57 PM
Thread: Advice on Oxy/Acetylene kit
by OxxAndBert- Replies
- 34
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- 1,925
I guess the term "ownership" gets a bit technical...
I guess the term "ownership" gets a bit technical - but there's clearly "rental" and "perpetual once off up front payment for the bottle". As you say - some mixed arrangements with that once-off cost...
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13th Mar 2024, 10:06 PM
Thread: Advice on Oxy/Acetylene kit
by OxxAndBert- Replies
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I see you’re in Melbourne, so good chance there...
I see you’re in Melbourne, so good chance there is a dedicated welding supply place nearby that will let you handle the gear.
BOC, Migomag, Migwell as well as plenty of independent welding and... -
13th Mar 2024, 03:42 PM
Thread: Advice on Oxy/Acetylene kit
by OxxAndBert- Replies
- 34
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- 1,925
I did a lot of oxy-acet welding as a young bloke....
I did a lot of oxy-acet welding as a young bloke. Just hobby stuff, never welded as a trade.
I no longer have oxy-acet gear as I simply don't see a need for it. I have oxy-lpg for cutting thicker... -
12th Mar 2024, 05:30 PM
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I’m NOT a sparky so can’t give a specific...
I’m NOT a sparky so can’t give a specific regulation reference, but definitely not kosher in my experience.
It’s a sub board, should be on its own circuit and the 6mm feed to the shed doesn’t... -
7th Mar 2024, 10:45 PM
Thread: Metal shaping with the metal shaper
by OxxAndBert- Replies
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A decent face mill would make short work of the...
A decent face mill would make short work of the bulk material removal.
Steve -
7th Mar 2024, 03:17 PM
Thread: AR9 Lathe alignment
by OxxAndBert- Replies
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A thou along the top and basically nothing along...
A thou along the top and basically nothing along the front face - I'd be over the moon about that!!
Sort out the tailstock height and start making chips I'd think.
Steve -
2nd Mar 2024, 08:43 PM
Thread: Specialty Steel Supply
by OxxAndBert- Replies
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Trailer axles come up frequently on Facebook...
Trailer axles come up frequently on Facebook marketplace etc too.
Forklift tynes are a great source of high quality non-round steel. Pretty sure they are 4140 or similar. Machines beautifully but... -
1st Mar 2024, 03:03 PM
Thread: Specialty Steel Supply
by OxxAndBert- Replies
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I realise you were asking specifically about new...
I realise you were asking specifically about new steel, but if you want to save a few dollars for smaller diameter stock then keep an eye out for high tensile bolts
IME they are nice steel to work... -
1st Mar 2024, 08:43 AM
Thread: Indexable carbide end mills
by OxxAndBert- Replies
- 33
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Easy!! Slightly too aggressive on the feed/DOC...
Easy!!
Slightly too aggressive on the feed/DOC and ping - it just happens :)
Practically though, there’s probably only the same cross section of material as a 4mm solid endmill - so I’ll cite... -
29th Feb 2024, 04:00 PM
Thread: Indexable carbide end mills
by OxxAndBert- Replies
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Just for interest, no material left in the center...
Just for interest, no material left in the center a 2 insert 14mm diameter BAP300 tool holder once the pockets are cut.
Here’s one I broke recently. Something to keep in mind when looking at... -
28th Feb 2024, 03:45 PM
Thread: Indexable carbide end mills
by OxxAndBert- Replies
- 33
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- 2,081
Good info Karl. My own observation is that the...
Good info Karl.
My own observation is that the recognised brand manufacturers don't typically run the generic (eg APxx) inserts for milling. I've come across a couple of exceptions, but in... -
26th Feb 2024, 09:39 PM
Thread: Indexable carbide end mills
by OxxAndBert- Replies
- 33
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Thanks Karl - that pretty much confirms what I...
Thanks Karl - that pretty much confirms what I thought ie that the cheap ones are crap but a good one will work well.
IME there is no way known you’ll get that sort of performance out of the eBay... -
25th Feb 2024, 09:31 PM
Thread: Precision ground flat stones
by OxxAndBert- Replies
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What I meant by "agricultural" was the possible...
What I meant by "agricultural" was the possible applications in my workshop compared to the higher precision surfaces I understood the stones were originally intended for (like his beautiful vee...
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25th Feb 2024, 08:28 PM
Thread: Precision ground flat stones
by OxxAndBert- Replies
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I was pretty sure there had been discussion here...
I was pretty sure there had been discussion here previously about them.
Finally found the thread - started by JHovel back in 2017 when he made some of his own.
... -
25th Feb 2024, 04:54 PM
Thread: Precision ground flat stones
by OxxAndBert- Replies
- 23
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- 1,335
Precision ground flat stones
I agree Michael, but I think we’re both considering applications that are magnitudes more agricultural than they are actually intended for.
FWIW - here’s the Robyn Renzetti video I referred to... -
25th Feb 2024, 11:32 AM
Thread: Precision ground flat stones
by OxxAndBert- Replies
- 23
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- 1,335
My understanding of the purpose of grinding them...
My understanding of the purpose of grinding them is to actually grind the tops of the grit flat, so that they won't cut like a normal stone (and hence won't actually cut the primary surface).
... -
24th Feb 2024, 09:00 PM
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Back in my youth we used the old nichrome wire...
Back in my youth we used the old nichrome wire wound radiant heater elements as rheostats for charging motorbike batteries from dumb car battery chargers. Normally to use as spotlighting batteries. ...
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23rd Feb 2024, 09:44 PM
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- 614
I have tried that a few times in the past, but...
I have tried that a few times in the past, but TBH what normally happens is I get bored watching it, get distracted with something else, forget about it, go inside, then remember in the middle of the...
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23rd Feb 2024, 09:36 PM
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Thanks John. I generally agree with what...
Thanks John.
I generally agree with what you're saying in regards to testing start/cranking batteries.
I don't see that it applies directly to deep cycle batteries though, where its capacity... -
23rd Feb 2024, 03:17 PM
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12v lead-acid battery tester recommendation
I seem to accumulate a few 12v batteries around the place.
Cranking batteries, deep cycle ones, traditional wet lead-acid, AGM, VRLA etc and ranging from small 6Ah ones through to about 150Ah. I... -
21st Feb 2024, 09:41 AM
Thread: Indexable carbide end mills
by OxxAndBert- Replies
- 33
- Views
- 2,081
I'm definitely not a fan of them. I find them...
I'm definitely not a fan of them. I find them harsh and noisy, and not very effective for steel. Mill is a 1.8T TOS FNGJ32 so rigidity isn't particularly an issue.
Possibly its the cheap crap... -
20th Feb 2024, 09:31 PM
Thread: Turning small extended diameters
by OxxAndBert- Replies
- 9
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Turning small extended diameters
Not my tip - I learned this from Joe Pie on Youtube a few years ago. I've had to use it a couple of times lately so thought I'd share in case anyone doesn't know about it.
Here's the original video:... -
20th Feb 2024, 01:16 PM
Thread: 80mm Chuck on a 12x24 lathe
by OxxAndBert- Replies
- 4
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I read your original post saying you unscrew it...
I read your original post saying you unscrew it to put on your rotary table - but didn’t click that you were unscrewing it from the stub.
I was actually wondering how you were mounting it on the... -
19th Feb 2024, 08:25 PM
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Just a quick update... My can of CRC 3-36...
Just a quick update...
My can of CRC 3-36 arrived the other day, so I've given the T&C grinder a spray.
Weird stuff - looks like any other thin oily spray when it goes on, but come back the next... -
18th Feb 2024, 04:13 PM
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I think your original reasoning was somewhat...
I think your original reasoning was somewhat sound, but possibly some mixed/invalid references.
I haven’t looked at how you might have got the initial thread depth, but referring to this page... -
17th Feb 2024, 04:29 PM
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I typically just use diameter minus pitch to get...
I typically just use diameter minus pitch to get the ID.
In this case for 30mm x 24TPI, it’s about 1.05mm pitch - so bore the ID 28.95.
Steve -
16th Feb 2024, 10:36 PM
Thread: Makita drill chuck removal ideas?
by OxxAndBert- Replies
- 33
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- 1,443
Sometimes trying to tighten a screw can get you...
Sometimes trying to tighten a screw can get you enough movement to break it loose.
Another tip is to use a smear of valve grinding paste on the bit. It provides some additional friction -... -
15th Feb 2024, 10:34 PM
Thread: CNC metal cutting questions
by OxxAndBert- Replies
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From what I can find online the minimum radius...
From what I can find online the minimum radius for internal corners is typically about 0.75mm.
I know there’s also a general rule that the minimum hole diameter is 1x the material thickness. Not... -
15th Feb 2024, 04:00 PM
Thread: CNC metal cutting questions
by OxxAndBert- Replies
- 23
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CNC metal cutting questions
You can definitely work around the internal corner radius issue depending on which faces/features are critical
Here’s a quick sketch of a couple of example options for internal radii.
From left... -
15th Feb 2024, 12:55 PM
Thread: CNC metal cutting questions
by OxxAndBert- Replies
- 23
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What thickness material? I’m assuming under...
What thickness material?
I’m assuming under about 20mm as that’s about the practical limit of laser IME…
Steve