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PERFECTO LATHE

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phil196201/03/2017 10:09:36
45 forum posts
4 photos

hi fellas new to all this but here goes I have a lathe that was made in Leicestershire its called a Perfecto Lathe is there any info on this lathe would it be metric or imperial is there a screw cutting chart for this lathe I read its the same as the myford ml2/4 also the Zyto any help would be grateful ATB Phil

Jim Nic01/03/2017 10:53:48
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206 forum posts
111 photos

Have you looked at the brilliant lathes.co.uk site? Lots of info there and it would seem that a screwcutting chart is available from him.

Jim

phil196201/03/2017 10:54:06
45 forum posts
4 photos

my lathe

 photo 16797027_764290130401883_2649299691301846189_o_zpspm8nhmt0.jpg

 

Edited By philip walker 1 on 01/03/2017 10:55:02

Edited By philip walker 1 on 01/03/2017 10:55:13

phil196201/03/2017 10:55:53
45 forum posts
4 photos

 photo 16819450_764290077068555_758783109679893917_o_zpstjkk4jnz.jpg

Edited By philip walker 1 on 01/03/2017 10:57:16

Mike01/03/2017 10:55:58
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713 forum posts
6 photos

There's a fair amount of information on the Lathes & Co website - go to http://www.lathes.co.uk/perfecto/index.html

I had one of these bought from new in the early 1970s. It was OK as long as you didn't expect too much of it, but it soon let you know you were over-working it by starting a dreadful chatter which led to poor surface finish. Mine was imperial - I don't think there was a metric version. I replaced it with a Myford ML7R, which was far superior.

Hope I haven't put you off. You will get some good work out of your Perfecto is you treat it kindly!

phil196201/03/2017 11:00:26
45 forum posts
4 photos

cheers not doing nothing to big just small parts I tried that site but don't give you the screw cutting chart would it be same as myford ml2/4 ?

phil196201/03/2017 11:05:22
45 forum posts
4 photos
Posted by Jim Nic on 01/03/2017 10:53:48:

Have you looked at the brilliant lathes.co.uk site? Lots of info there and it would seem that a screwcutting chart is available from him.

Jim

Thanks Jim ATB Phil.

Journeyman01/03/2017 11:39:38
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607 forum posts
92 photos

Hi Phil, I started with a Zyto (very similar) many years ago (now have Warco WM250) . That little lathe will get you going nicely. You may want to beef up the benchtop a bit though (looks like 1/2" ply) you will find it resonates and leads to chatter. A length of kitchen worktop placed on top of the ply would be good, and easy to clean down too.

Cheers, happy turning

John

Edit: spelling

Edited By Journeyman on 01/03/2017 11:47:54

phil196201/03/2017 11:45:36
45 forum posts
4 photos
Posted by Journeyman on 01/03/2017 11:39:38:

Hi Phil, I started with a Zyto (very similar) many years ago (now have Warco WM250) . That little lathe will get you going nicely. You may want to beef up the benchtop a bit though (looks like 1/2" play) you will find it resonates and leads to chatter. A length of kitchen worktop placed on top of the play would be good, and easy to clean down too.

Cheers, happy turning

John

Cheers john I have now added another sheet of 3/4 ply on top of this so around 1 1/4 thick now yes its a super little lathe its my first one its very quiet to just ordered some new cutters as the ones that came with it were all damaged it will do to get me started and only making small things at the moment so should be ok for that

Mike01/03/2017 11:51:36
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713 forum posts
6 photos

The pictures in Phil's posts show a machine exactly the same as mine. One quirk was that the carriage handwheel worked in the opposite direction to that on any other machine I have ever used - you turned it clockwise to advance the carriage the left. I think what really limited the machine's performance was a rather weak headstock bearing. I note that the very last Perfecto machines had a roller bearing headstock, which must have been a great improvement.

Mick Henshall01/03/2017 12:54:34
519 forum posts
29 photos

Mike- my Corbett lathe has the same set up turn clockwise to advance saddle towards the chuck, its never been an inconvenience for me

Regards Mick

Bazyle01/03/2017 12:55:18
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4714 forum posts
186 photos
Drummond Screwcutting Char
Threads Mandrel driven driver driven driver leadscrew
9 40 1 1 1 1 45
10 40 1 1 1 1 50
11 40 1 1 1 1 55
12 40 1 1 1 1 60
14 20 1 1 1 1 35
16 20 1 1 1 1 40
18 20 1 1 1 1 45
20 20 1 1 1 1 50
22 20 1 1 1 1 55
24 20 1 1 1 1 60
25 20 1 1 25 20 50
26 20 1 1 1 1 65
28 30 1 1 35 20 60
32 30 1 1 40 20 60
36 30 1 1 45 20 60
40 30 1 1 50 20 60
114.4 20 55 30 60 25 65
171.6 20 55 25 60 20 65
260 20 65 20 60 30 100
Bazyle01/03/2017 12:56:38
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4714 forum posts
186 photos

Had to split the postt as too large
Where there is "1" it is just to make the spreadsheet calculations work (in the part of the sheet not shown here) so just leave out or use idler gears to bridge the gap. You do not have to follow a chart slavishly it is just one way of getting the ratio needed. So if it shows 20 driving 40 you could use 30>60 or 25>50 if those are what you have.

Bazyle01/03/2017 13:00:58
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4714 forum posts
186 photos
Metric
pitch equiv tpi approx Mandrel driven driver driven driver leadscrew %
0.75 33.867 33.846 30 60 65 50 20 55 0.06
1.00 25.400 25.385 65 30 20 50 20 55 0.06
1.25 20.320 20.308 20 1 1 60 65 55 0.06
1.50 16.933 16.923 20 1 1 55 65 50 0.06
1.75 14.514 14.505 20 30 35 55 65 50 0.06
2.00 12.700 12.692 65 30 20 50 40 55 0.06
2.25 11.289 11.282 30 1 1 55 65 50 0.06
2.50 10.160 10.154 40 1 1 60 65 55 0.06
2.75 9.236 9.231 40 1 1 60 65 50 0.06
3.00 8.467 8.462 40 1 1 50 65 55 0.06
1.75 14.514 14.545 30 1 1 60 55 50 -0.21
2.00 12.700 12.727 20 1 1 50 55 35 -0.21
Scrumpy01/03/2017 13:28:10
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148 forum posts

I had the perfecto lathe in the 1970 I completed several small stationary engines on it the only problem I had was getting the cutting tool to the correct height until I altered a myford multi tool holder to fit , You will enjoy it as it a good starting point

phil196201/03/2017 13:28:20
45 forum posts
4 photos
Posted by Bazyle on 01/03/2017 13:00:58:
Metric
pitch equiv tpi approx Mandrel driven driver driven driver leadscrew %
0.75 33.867 33.846 30 60 65 50 20 55 0.06
1.00 25.400 25.385 65 30 20 50 20 55 0.06
1.25 20.320 20.308 20 1 1 60 65 55 0.06
1.50 16.933 16.923 20 1 1 55 65 50 0.06
1.75 14.514 14.505 20 30 35 55 65 50 0.06
2.00 12.700 12.692 65 30 20 50 40 55 0.06
2.25 11.289 11.282 30 1 1 55 65 50 0.06
2.50 10.160 10.154 40 1 1 60 65 55 0.06
2.75 9.236 9.231 40 1 1 60 65 50 0.06
3.00 8.467 8.462 40 1 1 50 65 55 0.06
1.75 14.514 14.545 30 1 1 60 55 50 -0.21
2.00 12.700 12.727 20 1 1 50 55 35 -0.21

Thank you for this most help full so to cut a thread 26tpi I use a 20 on mandrel 65 on lead screw then any gear that will link them together is that right ? thank you

phil196201/03/2017 15:11:10
45 forum posts
4 photos

Posted by Mike on 01/03/2017 11:51:36:

The pictures in Phil's posts show a machine exactly the same as mine. One quirk was that the carriage handwheel worked in the opposite direction to that on any other machine I have ever used - you turned it clockwise to advance the carriage the left. I think what really limited the machine's performance was a rather weak headstock bearing. I note that the very last Perfecto machines had a roller bearing headstock, which must have been a great improvement.

Can you still get headstock bearing for this lathe if so were from just in case

Mike01/03/2017 16:18:54
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713 forum posts
6 photos

Hi Phil, Personal message sent, in reply to yours.

Andrew Johnston01/03/2017 16:43:09
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4847 forum posts
543 photos
Posted by Mike on 01/03/2017 11:51:36:

One quirk was that the carriage handwheel worked in the opposite direction to that on any other machine I have ever used - you turned it clockwise to advance the carriage the left.

Saves an idler gear and stub shaft in the saddle, so it's cheaper.

Andrew

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