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Thread: Lathe Choice

  1. #16
    Join Date
    Apr 2016
    Location
    Greer, SC
    Posts
    74
    That's a great reference David. Thanks for sharing.

    SWS

  2. #17
    Join Date
    Dec 2006
    Location
    Morrisonville, NY
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    171
    Quote Originally Posted by Stark Suggs View Post
    That's a great reference David. Thanks for sharing.

    SWS
    I agree. Ive been thinking about the Laguna 1836 but after looking at the sheet I may look closer at the Jet 1840.

  3. #18
    Join Date
    Apr 2018
    Location
    Cambridge Vermont
    Posts
    625
    If it was me I wouldn't get a non-variable speed lathe. I think I would shy away from a reeves drive as well. VFDs are cheap enough now that it's really the only way to go.

  4. #19
    Join Date
    Jul 2016
    Location
    Lebanon, TN
    Posts
    649
    I got very close to pulling the trigger on the Laguna 1836, while it was on sale in January, but after talking to a few folks, they persuaded me to 'Buy Once, Cry Once', so I went for it's bigger brother, the Laguna 24/36 and bought the 20" extension at the same time. I've had it about 3 weeks, but haven't even turned it on yet.

  5. #20
    Join Date
    Jul 2017
    Location
    Northern Illinois
    Posts
    166
    Quote Originally Posted by ChrisA Edwards View Post
    I got very close to pulling the trigger on the Laguna 1836, while it was on sale in January, but after talking to a few folks, they persuaded me to 'Buy Once, Cry Once', so I went for it's bigger brother, the Laguna 24/36 and bought the 20" extension at the same time. I've had it about 3 weeks, but haven't even turned it on yet.

    I did similar - have had the Laguna 2436 for about 8 months and love it! Can't imagine going back to a smaller lathe with fewer features.
    Tom

  6. #21
    Join Date
    Feb 2018
    Location
    SW Missouri
    Posts
    33
    Quote Originally Posted by David M Peters View Post
    Hi Pete, I'd invite you to check out my "big list of lathes" spreadsheet to get more ideas. You can winnow down the choices by going to Data > Create new Filter View.
    Mr. Peters. I, and a friend, are looking at lathe options and we found your spreadsheet very interesting and most helpful. I do have a question. Can you please tell me what the "score" number is telling me? I see the formula used, but must admit that I don't understand it.

    Thank you.
    .... Dave

    Old carvers never die.... they just whittle away.

  7. #22
    Quote Originally Posted by Dave Keele View Post
    Mr. Peters. I, and a friend, are looking at lathe options and we found your spreadsheet very interesting and most helpful. I do have a question. Can you please tell me what the "score" number is telling me? I see the formula used, but must admit that I don't understand it.

    Thank you.
    I'm glad you've found it useful! The score is something I did for fun, it's kind of like the NFL Quarterback scoring system. Positive points for HP and weight, negative points for cost:

    HP x 33+Weight 7.5-Cost 60

    I fudged the scalars so that each category would be roughly 100 points, ish. Here's a link to the data sorted by score, basically it puts heavy, powerful, imported machines like the Grizzly G0800 on top. My "boutique" (credit to my sister for that description) American Beauty doesn't fare very well in this system!

  8. #23
    Join Date
    Dec 2006
    Location
    Morrisonville, NY
    Posts
    171
    I did some research on the Jet 1840 EVS. The headstock only slides and does not pivot .

  9. #24
    Join Date
    Feb 2018
    Location
    SW Missouri
    Posts
    33
    Quote Originally Posted by David M Peters View Post
    I'm glad you've found it useful! The score is something I did for fun, it's kind of like the NFL Quarterback scoring system. Positive points for HP and weight, negative points for cost:

    HP x 33+Weight 7.5-Cost 60

    I fudged the scalars so that each category would be roughly 100 points, ish. Here's a link to the data sorted by score, basically it puts heavy, powerful, imported machines like the Grizzly G0800 on top. My "boutique" (credit to my sister for that description) American Beauty doesn't fare very well in this system!
    Thank you.
    .... Dave

    Old carvers never die.... they just whittle away.

  10. #25
    Join Date
    Jan 2020
    Location
    Hoschton, Georgia
    Posts
    12
    I went to the spreadsheet and pulled up the formula for the score.

    Horsepower x 33 + lathe weight/7.5 - price/60.

    I can't really tell if a higher score is better or not. The spreadsheet is full of good information and would let you narrow down your search. I like the cost per pound stats.

  11. #26
    Join Date
    Jan 2013
    Location
    sykesville, maryland
    Posts
    463
    Scoring is a common practice where spreadsheets are used to create a "forced choice matrix comparison" whereby characteristics are weighted based on importance, then added or multiplied to yield a composite score. One has to be careful with the weightings and aggregate scores so that the intended outcome is really achieved: best choice. In the formula listed bigger numbers are better; it's basically HP+weight-price. The values are weighted to bring them near equal values for "nominal" metrics (3 HP, 750 lbs, $6000). One would likely get similar outcome without the weights. I didn't look at the spreadsheet, but I would include swing, number & size of bearings, warranty, bed length, and banjo/tailstock quality factor in the matrix.

  12. #27
    Join Date
    Feb 2008
    Location
    E TN, near Knoxville
    Posts
    9,142
    Quote Originally Posted by tom lucas View Post
    Scoring is a common practice where spreadsheets are used to create a "forced choice matrix comparison" whereby characteristics are weighted based on importance, then added or multiplied to yield a composite score. One has to be careful with the weightings and aggregate scores so that the intended outcome is really achieved: best choice. In the formula listed bigger numbers are better; it's basically HP+weight-price. The values are weighted to bring them near equal values for "nominal" metrics (3 HP, 750 lbs, $6000). One would likely get similar outcome without the weights. I didn't look at the spreadsheet, but I would include swing, number & size of bearings, warranty, bed length, and banjo/tailstock quality factor in the matrix.
    I've used similar methods in spreadsheets but I put arbitrary weighting factors in cells as variables. This makes it easy to adjust the weights and see the effect. In a lathe evaluation spreadsheet this would let users adjust weights on things that may be important to them, such as bed length over weight, HP and swing over cost, etc.

    JKJ

  13. #28
    Join Date
    Feb 2012
    Location
    Haubstadt (Evansville), Indiana
    Posts
    1,182
    The spreadsheet is fine except for the $/lb and score. Neither of these columns add anything in the decision making and IMO are misleading. However it is not my spreadsheet.
    When working I had more money than time. In retirement I have more time than money. Love the time, miss the money.

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