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21st Mar 2021, 05:30 PM
Thread: Aldi Plasma cutter
by unixbigot- Replies
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Anyone know what the thread on the torch is?
I have one of these (and I've cut 12mm steel with it, though it was rough as guts). Does fine in smaller stuff.
I ordered a straight handpiece to convert to CNC, but the thread is not a match,... -
1st Sep 2018, 09:02 AM
Thread: zinc plated metric bolts
by unixbigot- Replies
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I think hardware stores stock different plating...
I think hardware stores stock different plating to prevent stock getting mixed up. I recommend bolt dot com dot au. You can order for pickup or get delivery.
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16th Oct 2017, 11:42 AM
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There is a generic bevel gear generator on...
There is a generic bevel gear generator on Thingiverse, then you just need to code up those drive lugs.
https://www.thingiverse.com/thing:3575 -
14th Oct 2017, 08:17 AM
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Since the height adjustment is low speed...
Since the height adjustment is low speed intermittent use, a 3D printed replacement would probably work just fine.
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6th Sep 2017, 07:25 AM
Thread: Old Standaco lathe missing a gear
by unixbigot- Replies
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Take a guess at the number of teeth, print out a...
Take a guess at the number of teeth, print out a paper template and see if it fits. Next step is to 3d print a 3mm thick template to confirm operation. Then print or cut a gear. For tumblers...
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6th May 2017, 07:42 PM
Thread: Tube bender tool?
by unixbigot- Replies
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The cheap plumbers copper benders have worked...
The cheap plumbers copper benders have worked fine for me on the 13mm steel tube from bunnings.
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2nd Dec 2016, 02:45 PM
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Hi @Woodlyo, i have a Great Scot in good working...
Hi @Woodlyo, i have a Great Scot in good working order.
From your pictures it looks like you have the stock white metal bushings. The metal rings with holes are threaded cones used to tighten... -
25th Oct 2012, 11:33 PM
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I had a similar problem - milling slide no nuts. ...
I had a similar problem - milling slide no nuts. I turned a set of nuts on a threaded mandrel; rectangular foot but circular tapped pillar. My slots are about the same size as yours.
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23rd Sep 2012, 11:52 AM
Thread: Mars bar no, Mars lathe!
by unixbigot- Replies
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No spare gears, but have the cutters
Old Hutchoo, I have a mars great scot (missing many original parts alas) but with a relatively complete set of gears.
Don't have any spares, but I do have some of the cutters to make more. I've... -
23rd Feb 2012, 10:28 AM
Thread: Free compound slide-if you can use it
by unixbigot- Replies
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What a conundrum. It doesn't look like either...
What a conundrum. It doesn't look like either the cross slide or the compound slide on my Great Scot. Both of those have the female dovetail on top.
(First pic is cross-slide with compound... -
2nd Feb 2012, 10:30 PM
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Thanks Davycrocket, and all who've contributed to...
Thanks Davycrocket, and all who've contributed to my confusion..
Yep, I thought I'd got lucky when I found a bunch of 1.5" backplates for sale, but they were the 6TPI BSW thread, so I... -
10th Jan 2012, 01:53 PM
Thread: Mars metal shaper
by unixbigot- Replies
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Here's some info on their lathes (of which I have...
Here's some info on their lathes (of which I have one). The page mentions that they made shapers but has no more info.
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28th Dec 2011, 10:36 AM
Thread: 100mm Hole in Bandsaw Door
by unixbigot- Replies
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What about an air- or drill- powered nibbler?
What about an air- or drill- powered nibbler?
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14th Dec 2011, 11:08 AM
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counterbore
Try here: McJING Tools Online
Also, you might be able to modify a tap seat cutting tool or a woodwork spade bit (by fitting a wooden plug over the pointed tip to serve as a pilot) to do the job.
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8th Dec 2011, 02:04 PM
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Sourcing or converting a backplate for 1.5" 8TPI 55deg
I have a Mars "Great Scot" lathe with a 1-1/2" 8tpi spindle.
I was told by the previous owner that this is the same as hercus and southbend, so I bought a used backplate to suit, advertised for... -
16th Nov 2011, 10:33 AM
Thread: Leftover part from BS 4 Bandsaw??
by unixbigot- Replies
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I was stumped by that too. My best guess is...
I was stumped by that too.
My best guess is that it's a blade rest---if you stand it on the bed within the work-clamping area, the point fits into the backbone of the frame and prevents the full... -
19th Oct 2011, 02:07 PM
Thread: Anyone got an island benchtop?
by unixbigot- Replies
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I made a new workbench this year (still going,...
I made a new workbench this year (still going, haven't fitted the planned electric powered vises yet) Workbench - a set on Flickr
It's mobile w/ locking wheels and since I recently added a metal... -
17th Oct 2011, 10:39 AM
Thread: Hand Held RPM meter (tacho)
by unixbigot- Replies
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I haven't quite finished writing up the doco yet,...
I haven't quite finished writing up the doco yet, but when I do it will be at Make The Future
The code and schematic (eagle CAD format) is available right now at... -
13th Oct 2011, 11:27 PM
Thread: Hand Held RPM meter (tacho)
by unixbigot- Replies
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I built my own tachometer using a microcontroller...
I built my own tachometer using a microcontroller board (an arduino clone called RBBB), a 16x2 LCD and a hall-effect sensor.
With a tiny rare-earth magnet hot-glued to a shaft or pulley, it... -
6th Sep 2011, 09:14 AM
Thread: Source for single 5C collets?
by unixbigot- Replies
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McJing tools (mcjing.com.au). They're in sydney...
McJing tools (mcjing.com.au). They're in sydney but ship same day express, I typically get my orders (in brissy) next or 2nd day.
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5th Sep 2011, 07:46 PM
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Last time I added a downpipe for the same reason,...
Last time I added a downpipe for the same reason, I did it with a nibbler - Nibbler - Wikipedia, the free encyclopedia - air powered one for quick rough shaping then finished off with hand nibbler.
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1st Sep 2011, 07:55 AM
Thread: postage time from US
by unixbigot- Replies
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The last heavy order I had from the US (in June)...
The last heavy order I had from the US (in June) took 18 days.
Parcels larger than 100g seem to be taking much longer now (2-4wk) than smaller ones (7-10d). -
29th Aug 2011, 09:43 PM
Thread: Metalworking videos
by unixbigot- Replies
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Don't get your Cains crossed, 'tubal-cain' (the...
Don't get your Cains crossed, 'tubal-cain' (the name of the supposed first blacksmith of antiquity in the judeo-christian bible), has been used as a nom-de-plume by several different people.
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21st Aug 2011, 09:50 AM
Thread: Thread cutting lube
by unixbigot- Replies
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Do try the offset method, but as for cutting oil,...
Do try the offset method, but as for cutting oil, I found a hint in one of the SI Workshop Practice Series that said "50/50 neatsfoot oil and paraffin" makes a good cutting fluid. Having some...
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9th Aug 2011, 11:09 PM
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Looks like steel merchants and the Internet don't...
Looks like steel merchants and the Internet don't mix so well. Being a 9-5 desk jockey who only slings chips by moonlight, I like to shop online where I can.
Of the 3 steel merchants in my area... -
9th Aug 2011, 11:02 PM
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Progress update: Still haven't got the oilers...
Progress update:
Still haven't got the oilers forming visible drips, but am satisfied enough for now that they drip at an acceptable and steady rate.
The parting-of-the-red-sea that my... -
1st Aug 2011, 07:59 AM
Thread: using a wood lathe on metal
by unixbigot- Replies
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I've turned aluminum and brass up to 25mm dia on...
I've turned aluminum and brass up to 25mm dia on a wood lathe using one of those x-y cross-slide vises bolted to a wooden platform which is in turn fixed to the bed.
Vise holds an improvised... -
31st Jul 2011, 08:06 PM
Thread: Use of machine shop in Brisbane
by unixbigot- Replies
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What sort of machinery do you need? I think...
What sort of machinery do you need?
I think Kenmore mens shed (Shed West - Home) have a lathe. Brisbane Hackerspace at fortitude valley (hsbne.org) have a 9x20" lathe and some other machine tools. -
26th Jul 2011, 10:00 PM
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The forums really didn't like my edited picture. ...
The forums really didn't like my edited picture. I lowered the res and uploaded a new attachment.
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26th Jul 2011, 09:42 PM
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Here is a picture with the needle seat removed...
Here is a picture with the needle seat removed from the sighting chamber (inset is the top side of the seat, main picture shows the needle and underside).
I lightly filed off the burring around... -
26th Jul 2011, 06:41 PM
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I requested a clarification from Scott metals. ...
I requested a clarification from Scott metals. They say they don't stock any bar over 20mm, and will only order in for sales of a whole 6m length.
They seemed puzzled as to why anyone would... -
25th Jul 2011, 10:43 PM
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The part pointed to by the arrow (which I have...
The part pointed to by the arrow (which I have been calling the barrel) screws into the large part above and to the right, which contains the conical needle seat. The glass windows in that part are...
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25th Jul 2011, 09:38 PM
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Hmmn, I will have to strip one down and take some...
Hmmn, I will have to strip one down and take some more pics of the bottom of the valve seat, but I think that would work. Holding the sucker while turning it shouldn't be too hard--can use the...
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25th Jul 2011, 09:15 PM
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Poor experience from scott metals.
Thanks brett22---early bird steel pricelist was very helpful, alas they're clear on the other side of town.
Soundman, thanks for the info, esp on the brass. I have no trouble scrounging wood and... -
23rd Jul 2011, 09:48 PM
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oils is oils
I tracked down some Castrol Hyspin 68 spindle oil.
Still no control over oiler drip rate, so I stripped down the oilers and worked out the problem.
The needle valve barrel hadn't been deburred... -
21st Jul 2011, 10:27 PM
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Most of the metal on quicksales (aka oztion) is...
Most of the metal on quicksales (aka oztion) is Offcuts Galore (george vesley), whom we've been discussing. I see he has quite a bit of mild steel up this week, had hardly any last time I looked. ...
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21st Jul 2011, 10:18 PM
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Total Loss
Thank you all. I'm at a total loss with these oilers. (pauses for groans)
One of them adjusts between steady flow and about 6 drops a minute, the other one seems to have no appreciable movement... -
20th Jul 2011, 10:42 PM
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George at offcuts galore tells me he's not...
George at offcuts galore tells me he's not working in fabrication any more, so his "offcuts" are now new merchant bar chopped to order.
I've got a few bits of 20-30mm bar from flea markets, but I... -
20th Jul 2011, 09:52 PM
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Many thanks for everyone's ongoing advice. ...
Many thanks for everyone's ongoing advice.
Waggling the chuck up and down (scientific waggling of course!) while watching a dial indicator, I measure .06mm vertical movement in the spindle (about... -
19th Jul 2011, 08:41 PM
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Just got a pair of drip oilers from RDG in the...
Just got a pair of drip oilers from RDG in the mail.
I've no idea about drip rates or appropriate oils (apart from what I learned from
this thread and
this one.
What's a ballbark drip rate?... -
16th Jul 2011, 11:23 AM
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Thanks kev, I've bought from George at offcuts...
Thanks kev, I've bought from George at offcuts galore (he's on both ebay and oztion/quicksales) many times--this is where I've been getting my aluminium, brass, and some cold-rolled steel. Cost...
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16th Jul 2011, 09:59 AM
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Thanks roger, that's a good idea. Chunks of axle...
Thanks roger, that's a good idea. Chunks of axle would get me by for some of my needs.
I'm basically after round steel in sizes 20mm--50mm, square around 40-50mm, and flat bar 12-20mm thick. ... -
15th Jul 2011, 09:21 PM
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To the member who responded by PM, thanks, I...
To the member who responded by PM, thanks, I can't reply because your mailbox is full.
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15th Jul 2011, 09:18 PM
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The feedshaft is driven off the leadscrew (a pair...
The feedshaft is driven off the leadscrew (a pair of 20t gears), so if I put the tumblers in neutral I could use the leadscrew halfnut to lock the carriage, yes.
Can't do that if using power... -
15th Jul 2011, 01:03 PM
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Lathe newbie seeks metal, western brisbane
I live in inner western brisbane (Kenmore) and I've just got my first
metal lathe.
I'm looking for places to get round and flat bar offcuts or short
lengths in western brissy (I only have access... -
14th Jul 2011, 11:02 PM
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Designing a carriage lock and improving carriage rigidity
I was tinkering about tonight and I notice that if I pull the carriage
toward the tailstock it will move down the bed, causing the handwheel to turn.
This can't be good for doing any significant... -
14th Jul 2011, 10:55 PM
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That sure looks likely to me. Then of course the...
That sure looks likely to me. Then of course the thread indicator casting would get lost...
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13th Jul 2011, 10:55 PM
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Pipeclay, you were dead right of course. There...
Pipeclay, you were dead right of course. There is a wormgear assembly which rides on the feedshaft, and engages either of two wormwheels, which drive either the crossfeed or the carriage feed by...
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13th Jul 2011, 10:41 PM
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Awesome, thanks a lot. It must have been...
Awesome, thanks a lot. It must have been raining bronze when they made these lathes. I have an article from a recent issue of Model Engineers Workshop magazine on making a thread indicator for a...
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11th Jul 2011, 11:45 PM
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I'd love some pictures of the thread dial...
I'd love some pictures of the thread dial (missing entirely on mine), and info on how properly set up change gears are laid out. I tried to set up 32tpi as per the chart, but couldn't make the...