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Member postings for Adrian Harrison

Here is a list of all the postings Adrian Harrison has made in our forums. Click on a thread name to jump to the thread.

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Thread: Making small Wheels
09/01/2019 06:14:18

That's also a good idea and probably the easiest to accomplish I should think

08/01/2019 05:51:57
Posted by Jeff Dayman on 08/01/2019 04:06:40:

Another possible way to do a driving flat in pic below.

EDM is another option if you know someone with a machine, or if you know a mouldmaker.

drive-flat-idea.jpg

That is also a good idea.. I think i could use a washer behind the wheel to keep the insert from falling out

08/01/2019 02:16:58
Posted by JasonB on 07/01/2019 07:02:12:

Make a small broach and drive that through an undersize hole

I can see that working seeing as i would be driving the broach into aluminum.. thank you for sharing the idea

08/01/2019 02:14:16
Posted by David Jupp on 07/01/2019 09:53:25:

If mounted on a steel axle, an aluminium wheel will be prone to fretting if there is even the slightest relative movement possible. I think I'd be tempted to also use a drop of Loctite (or similar) to prevent that.

I seam what you mean and yes that would be a good idea

07/01/2019 05:58:08
Posted by Nicholas Farr on 07/01/2019 05:49:59:

Hi Adrian, a couple of ways shown in this tread, **LINK** but it will be a bit fiddley at 2mm.

Regards Nick.

Thanks Nick I will look at the link now

07/01/2019 05:56:14

this is the best picture i can find losi wheels.jpg

07/01/2019 04:01:01

I have a small RC Model that I would like to make some aluminum wheels for..
the original plastic wheels have a 2mm hole in the middle that has a flat spot so its a D shape for mounting and taking the drive..
what would be the best way to make this D shaped hole?

Thread: engaging back gear om Drummond M type lathe
05/01/2019 04:06:15

ok thanks.. with mine I have never moved any screws but it does work as it should so i will make sure nothing is lose

Thread: Practice facing
04/01/2019 18:31:17

Right I see what you mean.. I have not used this tool yet but I will make sure i sharpen it before i do

Thanks for the input

04/01/2019 18:12:19
Posted by Tim Stevens on 04/01/2019 17:54:26:

Adrian - if you look closely at your tool clip you can see a bright line where the edges meet. This is where the light is reflecting off a rounded surface, ie not a sharp edge. Any tool which shows this effect on the business edges could benefit from sharpening.

Cheers, Tim

do you mean all the lines on he face?

04/01/2019 17:24:46

that lathe in the youtube clip looks amazing

04/01/2019 17:22:15

how do you mean too soft?

04/01/2019 16:27:35
Posted by roy entwistle on 04/01/2019 10:10:28:

Try starting in the centre and work out

Roy

I was thinking about this as i think it may put less side loading on the workpice

04/01/2019 16:25:44
Posted by Hopper on 04/01/2019 08:51:30:

Keep the cutting edge of the tool just ahead of the leading edge of the cross slide so the cross slide does not hit the chuck.

Edited By Hopper on 04/01/2019 08:52:55

so the cutting edge is just sticking out over the edge? i was wondering if i should turn too holder 90 degree to face the part I'm facing off

04/01/2019 16:18:53

would this be classed as a knife edge? I did try a google but did not really find any info

so i should keep the top slide over the cross slide as possible and keep the tooling as short as possible..
i had read that HSS tooling is best for the speeds of this lathe and i will get a bench grinder fro home as the only one i have access to is at work..

lathe tooling .jpg

04/01/2019 05:52:21
Posted by Thor on 04/01/2019 05:19:46:

Hi Adrian,

Brazed carbide tipped tools may need to be sharpened to get a good finish, you can use a "green wheel" to grind the cutting edges and then I use a diamond hone. This improved my brazed carbide tipped tools. If you have some HSS tools they can be sharpened with an ordinary wheel on a bench grinder and honed afterwards. As you say, cold rolled steel may not be the best metal to turn, try and get some freecutting steel. When facing you should ideally increase the speed as the tool approaches the centre of the work, so if you have a DC motor or a 3-phase motor with inverter just adjust the speed.

Thor

Hi Thor.. I do have a diamond hone that i have been using to sharpen HSS tooling that came with my lathe but did not sharpen the carbide one i tried. it didi give me the best finish today as it was
i have an older 1924 lathe with on and off switch for the motor and thats all the motor has

Thread: engaging back gear om Drummond M type lathe
04/01/2019 05:37:20

so the slotted screw needs to be tighten and loosen when engaging and disengaging the bull gear?

Thread: Surface finish
04/01/2019 05:11:54
Posted by Ady1 on 04/01/2019 00:10:11:

I've uploaded my entire drummond headstock stripdown here

Some photos are rubbish but a lot are useful

interesting to see how it all goes together

Thread: Practice facing
04/01/2019 03:40:25
Posted by Barrie Lever on 03/01/2019 23:26:46:

Adrian

That looks like a brazed tip carbide tool not HSS, nothing wrong with that though.

What is the material?

Unless there is something horribly wrong with the lathe I am fairly sure you will get a better finish than that that.

Are you in Canada?

Regards

Barrie

Hi Barrie yes I am in Canada and its cold rolled steel so probably not the best metal to use

03/01/2019 23:13:52

and yes my poor lathe does need a good clean and paint which I will do this summer when the weather is warmer

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