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Member postings for Andrew Davies 4

Here is a list of all the postings Andrew Davies 4 has made in our forums. Click on a thread name to jump to the thread.

Thread: Myford super 7 Positioning servo's on Spindle and main infeed
31/01/2019 14:34:29

Got a 3/16th key for the shreline head stock. Sherline stated 3/16th but this is too big.

31/01/2019 14:24:10

Timing belt for spindle just arrived, fitted this morning.

20/01/2019 12:04:53

Someone has asked how I did the lettering in yellow. This is simply kitchen towel, rolled up, tapped and a flat pushed on it. Sooooooo easy. Needs about 3 coatings.

17/01/2019 17:18:18
Bottom saddle dead stop ground away to fit around new ball screw bearing mount.
This is adjustable and is a mechanical stop to stop you hitting the tooling and damaging it.
16/01/2019 17:09:30

Shims cut for bottom saddle all from 0.02mm brass.

Waiting for saddle to come back. Not sure how many I will need. Easily cut with a shard blade.

Not sure of the width, I will wait for the saddle to come back before I cut.

 

Edited By Andrew Davies 4 on 16/01/2019 17:13:41

Edited By Andrew Davies 4 on 16/01/2019 17:14:57

16/01/2019 13:29:00

After a lot of research I have come up with a cost effective a belt for the for the cutter. This works with the existing Sherline pulley. 4 MM Green Polyurethane Round drive belting

This comes in open strips and is welded with a small amount of heat. Done test and the joint is very strong.

 

Edited By Andrew Davies 4 on 16/01/2019 13:32:32

Edited By Andrew Davies 4 on 16/01/2019 13:38:23

16/01/2019 13:23:05

A little late in the day, but I have had to get the bottom saddle ground. As the main bed was re ground it has dropped the saddle with respect to the under side of the bed. Due to this when you clamp up the bottom plate onto the saddle there is movement between the saddle and bed. I am also going to rind the saddle face that moves on the bed.

I have over ground the sable and will set up with some 0.02mm shim.

img_2249.jpg

15/01/2019 20:55:58

This has been a long research and strange conclusion.

As the MT 1 taper cutter holder is going to be vertical, I wanted a nut that will hold the cutter shaft in place. The cutter shaft is being machined from an existing MT1 taper avaliable on the internet.

I need a nut to thread on the end of the sherline head stock that would hold the shaft, my extensive research found nothing.

I went into my garage and looked through my plumbing fittings and found that a 15mm compression fitting fitted the head stock!!

img_2258.jpg

Perfect!

Edited By Andrew Davies 4 on 15/01/2019 20:57:48

10/01/2019 18:19:59

Hi David

Looked at you profile. We come from similar background on engineering,but mine is electronic.

I also have a bike, Triumph street triple R, that is loved and cared for......

All the best

Andrew

10/01/2019 18:17:47

Someone has asked what paint I used.

Please see attached pics.

The main paint was great both for brush and spray.

Edited By Andrew Davies 4 on 10/01/2019 18:20:58

Edited By Andrew Davies 4 on 10/01/2019 18:23:53

10/01/2019 17:53:55

img_1652.jpgimg_1936.jpgSomeone has asked what paint I used.

Please see attached pics.img_2094.jpg

09/01/2019 22:55:22

HMI now fitted

img_2201.jpg

09/01/2019 22:49:54

As you will see from the attached, I am an electrical engineer, but the drawings work. This is the main spindle cutter plate. I have also got a few other bits comming.

Still about 100 hours of work before I cut gears.

post.jpg

09/01/2019 22:42:49

Just sent drawings off to have spindle plate made. Made proto type in wood. Did not put slots in proto type as did not save the machine. Have to wait a week or so for the machine shop. 3 days design to make sure it was right!. Keeping fingers crossed. slots are for motor to tension belt.img_2238.jpg

21/12/2018 06:45:08

img_2179.jpgimg_2180.jpg

Starting to look more like a lathe.

Edited By Andrew Davies 4 on 21/12/2018 06:47:17

Thread: Myford Paint
20/12/2018 23:12:16

I have posts on here of my renovation, there is no need to remove primer. Just get fime grit paper and sand down and then re prime. I used red oxide and it worked really well.

All but the cabinet I hand painted, see the results, it worked really well.

Andrewimg_2164[1].jpg

Thread: Myford super 7 Positioning servo's on Spindle and main infeed
20/12/2018 22:24:30

img_2164[1].jpgNot sure if these photos help.

They show an extra plate to the right and leftimg_2163[1].jpg

20/12/2018 18:31:01

Hi

It will be very difficult to turn upside down.

When I was cleaning the base up, I realised the top slides vertically off, hence the small bolts in each corner. There are heavy plates under the plate steel top for stability.

In my opinion you have to know when to stop, after all this is a Myford 7 and always will be.

I have taked many photos whilst carrying out the renervation, a lot of these are in my album, I have many more if you have a particular area of interest. Unfortunately I do not have a photo with the top plate removed.

I still think I have about 200 hours to completely finish the project and complete all the software.

Andrew

20/12/2018 16:25:37

Looking more like a real one

img_2154.jpg

20/12/2018 10:02:47

img_2152.jpg

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