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Old 06-22-2020, 11:02 AM
KevinF KevinF is offline
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Default Need advice on QCTP and holders

Picked up this lathe from my friend.. Same buddy that Gerry met him when we picked up the milling machine.

2 1/8 spindle bore,gap bed, power feed cross slide. Its around 36" between centers but can swing 18" or something like that with the gap in place. Has the change gears for metric and inch threading.

I want to start shopping for tool holders and quick change toolpost asap.. Can't afford new name brand stuff. So whats best and where should I be looking? In what size?

Messy shop pics, didn't plan on bringing it home so soon, and had to do some quick moving and piling to make room.
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  #2  
Old 06-22-2020, 11:43 AM
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LKeithR LKeithR is offline
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Not a bad looking machine. Big and robust for sure. Melmax, if I remember correctly, is a Taiwanese made lathe; probably from the 80s. A lot of rather nice machines came out of Taiwan in that time period. Made for the North American market, too (carriage handwheel is on the LH side).

I've got a couple 1" square toolholders that I'll never use--I think they take 1/2 IC inserts. PM me your address and I'll send them to you...
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  #3  
Old 06-22-2020, 11:45 AM
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platypus20 platypus20 is offline
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Go to the Aloris website, they have a chart on sizing the tool post, it’s based in a series of dimensions, like spindle center over carriage height, compound height and a couple of other, that will tell you the correct size for that lathe.

What the say about sizing in sales catalogs can be wrong, not all lathes the same swing size, are the same, it’s based on the asked dimensions, as they vary lathe to lathe.
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Old 06-22-2020, 01:01 PM
KevinF KevinF is offline
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Thanks,

I guess first question should be multifix or aloris style?

I've no experience with either.
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  #5  
Old 06-22-2020, 02:00 PM
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Shade Tree Welder Shade Tree Welder is offline
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I have the Phase II stuff out of China, Aloris clones, they have been very good. My lathe was on the cusp of 2 sizes, I should have gone down not up. I have had to modify a number of holders to fit. Going down I would have not had that problem.

You should call Frank the Chinaman, I am sure he has a Canadian cousin.
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Old 06-22-2020, 02:19 PM
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digger doug digger doug is offline
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I have, use, and like the Multifix.

Creatool from china is selling a good clone.
Search Practical Machinist for Forrest Addy's testing & write up on them,
they come well recommended.
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  #7  
Old 06-22-2020, 02:28 PM
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greywynd greywynd is offline
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Personally I’ve never been a multifix style of toolpost fan. Always seems the angle is never ‘quite’ right on a lot of things. At least with the Aloris style you know the positions are square to each other.

Check Accusize, they sell some, and Cam got one a year or so ago from KMS tools, not sure if they carry the larger sizes like what you will likely need.


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  #8  
Old 06-22-2020, 05:15 PM
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Norm W Norm W is offline
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From my perspective there is too much floor.
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Old 06-23-2020, 06:06 AM
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digger doug digger doug is offline
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Quote:
Originally Posted by greywynd View Post
Personally I’ve never been a multifix style of toolpost fan. Always seems the angle is never ‘quite’ right on a lot of things. At least with the Aloris style you know the positions are square to each other.

Check Accusize, they sell some, and Cam got one a year or so ago from KMS tools, not sure if they carry the larger sizes like what you will likely need.


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What doo you mean ?

You line it up just like an Aloris style, using a tool block and a dial indicator.

You then have one position 90 degrees to the spindle (for facing) and one
parallel to the spindle (for turning) all the other angles are freebies used
to add extra clearance to a cut, nick in a chamfer when all done, etc.

The divisions are coarse enough to easily know where your at, when plunking
a tool block onto the post.
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  #10  
Old 06-24-2020, 12:01 AM
Don_S Don_S is offline
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As far as Aloris style toolposts go, the wedge style is generally preferred to the piston types.
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