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22nd Oct 2023, 05:50 PM
Thread: A belt untensioner?
by shedeng- Replies
- 32
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- 2,745
A bit of trivia re keyless drill chucks....if...
A bit of trivia re keyless drill chucks....if they get any form of lubrication in the workings they lose the locking capabilities.
The screw thread that pushes the jaws forwards to grip a drill has... -
23rd Jul 2023, 09:00 PM
Thread: DIY Lathe, don't roll your eyes...
by shedeng- Replies
- 64
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- 3,466
Two of the most important properties for a lathe...
Two of the most important properties for a lathe bed are torsional stiffness and bending stiffness and a piece of channel used for that purpose achieves neither.
Robert -
8th Apr 2023, 06:44 PM
- Replies
- 10
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- 1,229
Think of the boring head as a spin dry and what...
Think of the boring head as a spin dry and what happens to liquids in a spin dry.
Remembering to oil it before every use just doesn't happen especially if more than one gets to use it.
Grease... -
4th Apr 2023, 07:17 PM
Thread: Shaper vice direction
by shedeng- Replies
- 15
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- 1,627
The jaws of the vice are parallel to the stroke...
The jaws of the vice are parallel to the stroke as the stroke is always more the the capacity of the vice.
Robert -
29th Jan 2023, 03:13 PM
Thread: Flat belt Clarkson T&C grinder
by shedeng- Replies
- 8
- Views
- 726
Here is another to try. Rydell Industrial...
Here is another to try.
Rydell Industrial (Belting) Co.
Robert -
26th Jan 2023, 04:00 PM
Thread: Help to identify these
by shedeng- Replies
- 8
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- 1,003
I think they be special purpose spade drills. No...
I think they be special purpose spade drills. No pre drilling needed.
There is too much variation of the shanks to be router bits.
Robert -
14th Aug 2022, 07:36 PM
Thread: Why do I want a D Bit Grinder
by shedeng- Replies
- 140
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- 14,422
Hi Neevo. Look up 'Spieth precision...
Hi Neevo.
Look up 'Spieth precision locknuts.
Not that I think you should buy one and use it but that you note how and why they work and maybe modify the lock nuts you have to work the same... -
12th Aug 2022, 03:21 PM
Thread: Why do I want a D Bit Grinder
by shedeng- Replies
- 140
- Views
- 14,422
Hi Neevo. If you are going to be sharpening HSS...
Hi Neevo.
If you are going to be sharpening HSS materials you should be using CBN grinding wheels rather than diamond.
Diamond for carbides.
If you have used an SO grinder seriously clones... -
22nd May 2022, 06:44 PM
Thread: Dividing Head
by shedeng- Replies
- 14
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- 1,731
Dero it is for differential indexing. If you...
Dero it is for differential indexing. If you google "differential indexing using a dividing head" there are youtube clips that explain better than I can.
Robert -
Loctite requires a gap of about 0.1mm to work and...
Loctite requires a gap of about 0.1mm to work and reach full strength.
If you need accurate location you need to add a shallow groove to allow the polymerisation to take place.
Robert -
4th Jan 2022, 07:04 PM
Thread: Unknown Tool
by shedeng- Replies
- 11
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- 1,928
I worked a Italian Pear ratio pantograph for a...
I worked a Italian Pear ratio pantograph for a couple of years many moons ago and that was capable of about 15,000 rpm when wound up.
I am still amazed at how hard you could work a .25" dia. D bit... -
13th Dec 2021, 06:30 PM
Thread: Clamp setup
by shedeng- Replies
- 13
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- 2,218
For a one off it worked and that is all that...
For a one off it worked and that is all that matters.
Robert -
26th Oct 2021, 07:05 PM
Thread: Roll pin removal problem
by shedeng- Replies
- 24
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- 3,326
I think droog is heading in the right direction...
I think droog is heading in the right direction but instead of grease I would use bees wax.
The pressure when you strike the drift is such that not all is lost through the slot in the roll pin.
... -
13th Sep 2021, 08:24 PM
- Replies
- 5
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- 1,316
Some trivia. The thread on the spindle that...
Some trivia.
The thread on the spindle that pushes the jaws forwards should be kept dry. If it does get any lube it won't self lock properly.
Robert -
8th Sep 2021, 10:02 PM
Thread: Help wanted identifying carbide insert
by shedeng- Replies
- 5
- Views
- 1,077
That to me looks like the seat an insert would...
That to me looks like the seat an insert would sit on not the actual insert.
I suspect that the insert would be clamped fro the top not by a counter sunk screw.
Robert -
14th May 2021, 11:28 PM
Thread: Welding Table
by shedeng- Replies
- 13
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- 4,875
I think the machine when new would have had grub...
I think the machine when new would have had grub screws fitted to those holes to keep dirt out when not using the vertical head.
The original screws, probable lost, just replaced with threaded rod... -
7th Mar 2021, 09:51 PM
- Replies
- 6
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- 1,449
That looks like a product that was made by a...
That looks like a product that was made by a company called Fring Engineering that used to be in Bayswater.
I don't think they are still in business though.
Robert -
6th Jan 2021, 07:29 PM
Thread: 45 degree slot through aluminum rod
by shedeng- Replies
- 19
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- 4,685
Mmm I should have thought a bit more on the...
Mmm I should have thought a bit more on the problem.
No need to set the dividing head at 45 degree just advance x .0131" per 3 degree of rotation.
Robert -
6th Jan 2021, 07:20 PM
Thread: 45 degree slot through aluminum rod
by shedeng- Replies
- 19
- Views
- 4,685
Interesting problem. What I would try is...
Interesting problem.
What I would try is mounting a dividing head at 45 degree to the X axis and find the center of your 1/2 " rod and drill an 1/8" hole through.
The circumference of 1/2" is... -
3rd Nov 2020, 05:24 PM
Thread: Bowed flat bar straightening.
by shedeng- Replies
- 26
- Views
- 9,603
I'm older than most trees too but even so I found...
I'm older than most trees too but even so I found this fellows explanation of what you can do to manipulate metal informative.
https://www.youtube.com/watch?v=w1XPDzunbY0
Robert -
30th Oct 2020, 09:50 PM
Thread: Sparks when face milling ?
by shedeng- Replies
- 19
- Views
- 6,211
I agree with 900RPM but your feed should be...
I agree with 900RPM but your feed should be 0.07mm to 0.1mm per tooth which puts the feed around 300mm/min.
I would check to see if all the tips are in line axially and radially.
Carbide hates to... -
29th Oct 2020, 05:13 PM
Thread: How to remove pulley
by shedeng- Replies
- 17
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- 5,248
Drill the center and tap M8-M10 . put a screw in...
Drill the center and tap M8-M10 . put a screw in to push against the shaft. hopefully there will be enough thread length left.
Robert -
8th Sep 2020, 06:57 PM
Thread: Straight Edge.
by shedeng- Replies
- 10
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- 5,644
That is a knife straight edge. It would be hard...
That is a knife straight edge.
It would be hard but not impossible to use it get a surface flat without twist but a good 30cm steel rule would do almost as well and if you don't have one already... -
14th Jul 2020, 09:12 PM
Thread: Rexman Bull Gear locking pin
by shedeng- Replies
- 3
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- 3,671
G'day Ray-s, I have had my Rexman for 55 years...
G'day Ray-s, I have had my Rexman for 55 years and never run it in the back gears for the same reason your friends machine won't run...missing teeth.
However the drive pin on my machine screws in... -
14th Mar 2020, 07:05 PM
Thread: Setting up and adjusting tailstock
by shedeng- Replies
- 14
- Views
- 3,060
Turn down a piece in the chuck to the same...
Turn down a piece in the chuck to the same diameter as the quill, then bring the quill close to it and measure using a dial test indicator mounted on the saddle.
Using this method you can check... -
11th Mar 2020, 09:07 PM
Thread: CNC Mill Striations
by shedeng- Replies
- 18
- Views
- 6,594
Looks to me like your end mill has slight run...
Looks to me like your end mill has slight run out.
If you know your feed rate and spindle speed and can measure the pitch of your lines it should work out to be one line per rev.
Robert -
7th Mar 2020, 07:33 PM
Thread: 240V Motor for SG
by shedeng- Replies
- 47
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- 8,909
Fixing your motor to the column how do you cope...
Fixing your motor to the column how do you cope with the 150mm to 200mm rise of the spindle...motor tilt won't do it.
I think that the motor has to be mounted somehow to the spindle carriage so belt... -
3rd Dec 2019, 06:45 PM
- Replies
- 10
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Well Bill looks like I have to eat my words as...
Well Bill looks like I have to eat my words as that looks better than the original planed surface.
But....if you have soooo much time to spend on that you don't have enough projects.
:D
Robert -
10th Nov 2019, 07:46 PM
- Replies
- 10
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It looks to me like the table top surface is...
It looks to me like the table top surface is planed rather than ground which really means it will never look much better.
I use a fine stone on my table surface to remove small dings not to made it... -
18th Jun 2019, 09:30 PM
Thread: Tapping tiny threads sucks
by shedeng- Replies
- 34
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- 9,423
I have found using either a tap wrench or T...
I have found using either a tap wrench or T wrench on small taps you loose the sensitivity you need.
What you need to make first is a guide to keep the tap square... a piece of aluminium 20-25mm... -
11th Jun 2019, 06:52 PM
Thread: Tapered Gibs !
by shedeng- Replies
- 14
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- 3,759
Before trying to make a new gib I would try...
Before trying to make a new gib I would try straightening it by peening with a cross peen hammer or even a welding slag hammer.
Work on the convex side of the gib by putting straight line bruises... -
23rd Feb 2019, 10:20 PM
- Replies
- 25
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- 10,460
I have sourced high content silver solder from...
I have sourced high content silver solder from Johnson Matthey (Aus) Ltd
Also known as Noble Metals Australia
Tel: 03 9344 7700
64 Lillee Cres. Tullamarine 3043
matthey.com
Robert -
23rd Feb 2019, 09:10 PM
- Replies
- 25
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- 10,460
In the past I have sourced high content silver...
In the past I have sourced high content silver solder from Johnson Matthey (Aus) Ltd.
Also called Noble Metals Aus.
Tel: 03 9344 7700
64 Lillee Cres. Tullamarine 3043 -
29th Jan 2019, 06:33 PM
Thread: Meca dividing head
by shedeng- Replies
- 14
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- 4,932
Hard to see from a photo but I see very little...
Hard to see from a photo but I see very little evidence of wear on the thrust face in the 3rd photo.
Looks like you have made a good buy.
Robert -
5th Jan 2019, 09:19 PM
- Replies
- 11
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- 2,704
G'day, you might try J.J.Davies & Sons 1299 North...
G'day, you might try J.J.Davies & Sons 1299 North Road Huntingdale. They have a large range of felts of all sorts.
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29th Aug 2018, 10:37 PM
Thread: CNC vs manual milling machines
by shedeng- Replies
- 31
- Views
- 15,378
What you have to remember is that the machine...
What you have to remember is that the machine will do exactly what you tell it...which isn't what you thought you told it.
Robert -
26th Jul 2018, 10:02 PM
Thread: Sourcing small screws
by shedeng- Replies
- 21
- Views
- 3,529
Hi Ken, I would try Keables P/L in Melbourne. In...
Hi Ken, I would try Keables P/L in Melbourne.
In the past they have been able to supply hard to find fasteners. -
27th Jun 2018, 09:13 PM
Thread: Moving 600 kg Mill
by shedeng- Replies
- 34
- Views
- 11,317
I would say yes...but you will need 2 pieces of...
I would say yes...but you will need 2 pieces of ply as it's hard to re position one with a 660 kg mill sitting on it.
The transition from one sheet of ply to the other is where you might have a... -
7th Jun 2018, 09:22 PM
Thread: How often do you nod your head?
by shedeng- Replies
- 5
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- 1,386
No. Much better to have a tilting angle plate. ...
No.
Much better to have a tilting angle plate.
Robert -
31st Mar 2018, 09:02 PM
Thread: Tilley vapouriser
by shedeng- Replies
- 16
- Views
- 5,327
I was thinking of using hypodermic needles for...
I was thinking of using hypodermic needles for orifices for an air bearing I was toying with.
Fitting one inside another till the OD reached a size I could cope with.
The smallest needle ID is... -
14th Nov 2017, 07:56 PM
Thread: D Bit Grinder
by shedeng- Replies
- 15
- Views
- 6,229
OldRustyToolie, Didn't see that attachment,...
OldRustyToolie,
Didn't see that attachment, changes everything I said. -
13th Nov 2017, 10:02 PM
Thread: D Bit Grinder
by shedeng- Replies
- 15
- Views
- 6,229
That is a rough copy of a Deckel type SO D bit...
That is a rough copy of a Deckel type SO D bit grinder.
Deckel Grinders cost 5-6 times as much for the same capacity so quality IMHO is suspect for something that cheap.
It should be noted that... -
27th Sep 2017, 09:24 PM
Thread: Threading chrome rod
by shedeng- Replies
- 12
- Views
- 3,671
Totally agree.
Totally agree.
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24th Jun 2017, 07:49 AM
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Any material that has been permanently deformed...
Any material that has been permanently deformed has passed its yield point and is on its way to failure.
Straightening it brings that failure closer. -
3rd Jun 2017, 10:50 PM
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- 28
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- 6,123
Michael was there any noise occur when this...
Michael was there any noise occur when this happened.
Could it be that the reduction gear set up has locked its self some how.
As for sourcing the bearings there is NTN NSK SKF FAG Nachi all supply... -
13th May 2017, 07:55 PM
- Replies
- 9
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- 2,459
Won't one be running backwards.
Won't one be running backwards.
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4th May 2017, 08:01 PM
Thread: Making a rosette...
by shedeng- Replies
- 6
- Views
- 2,404
Michael, when you make a flat rosette it should...
Michael, when you make a flat rosette it should always be an uneven number of teeth because if you make your first cut and then traverse across to the other side you will cut the back face of...
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13th Apr 2017, 10:11 PM
Thread: any electronics gurus?
by shedeng- Replies
- 3
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- 3,438
Peter, are they encoder discs or something more...
Peter, are they encoder discs or something more exotic?
Robert -
Generally when a band saw blade starts to wander...
Generally when a band saw blade starts to wander like that one edge of some or all of the teeth have been damaged.
If you remove the blade and check the corners for bright spots on the side the cut... -
21st Feb 2017, 08:02 PM
Thread: Fly Cutter Geometry
by shedeng- Replies
- 7
- Views
- 2,483
To my mind you have the top rake running the...
To my mind you have the top rake running the wrong way.
At present the top rake is at 90 degree to the face plate surface in the plane of the cut. Try making it about 10 degree and polishing the...