Luben temperture setting change C° to F°

I don’t see how to change C° to F° for 3D printing setup for generating gcode with Luben. Is the only choice C° and using C° = 5*(F°-32)/9?

Honestly, it never occurred to me to try. All of the literature, material, and questions I’ve seen about 3D printing have used Cº, so I just continued with it. You mostly don’t need to think about it once you dial in your rig’s best printing temperature. Only if you switch back and forth between different printing materials, and even then it’s just remembering the right number for each material.

I think of it more as a setting than a temperature, so it doesn’t really matter what the units are.

Now, if you’re an experience machinist, you might be used to thinking in terms of thousandths of an inch instead of millimeters. I am not, but I could see it causing problems for others. In this case, you probably already have some CNC software that you’re comfortable using. I mostly use google’s search bar to translate my Imperial measurements to metric (search “1.25 inches in mm”), then design the model in metric.

Since the formula to convert to Fahrenheit is simple, it seems that putting it in the code would be easiest and more user friendly. I have never used C or mm so I am very uncomfortable using those units. I am an experienced metal fabricator and wood worker. I hope this conversion makes it to the top of the list as it really is easy code (I also was a software test lead for two large companies).

Why is it that fahrenheit matters? All my filament is marked with celsius recommendations anyway.
As @clewis said it’s just a number for a setting that doesn’t really mean anything.

Print out a chart and tape it to the side of your SM if you really need to know.


Agreed on the temp settings. The labels on my filaments are Celsius. I really meant to ask for inch conversion as all my woodworking and metal fabrication is in inches. I don’t know the metric system. Hard to teach an old dog new tricks. LOL.

I wish we had just gone ahead and completed making the changeover to metric.
It’s so much easier for measuring and building.
I do however still have a hard time visualizing it. So oftentimes I end up converting to inches for that reason, even though within any of the programs and on the SM I’m working in metric. I can see in my mind what 4" will be like, but I can’t with 100mm.


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At least it’s a ratio 25.4 and not like 3*pi*e or some irrational conversion :laughing:

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The more you use it and convert it the more comfterble you’ll be. And that really helps with global collaboration!

As a European I can only think it must be a nightmare as a kid to learn this stuff.

1 inch: fair enough, you have a base unit and you use that for more convenient larger/smaller units. (And yes, the last part of my thumb is exactly 2.54cm :stuck_out_tongue:

but then 1 foot is 12 inch. Ok, so we’re using a base 12 numericall representation? (No I didn’t measure the exact length of my feet this time :slight_smile:)

So, the next unit is again times 12? Ah, no, 3 feet is one yard. Uhm, ok? So I’m two yards tall? No you’re not. You’re 6 feet tall. Uhm, ok… :astonished:

And then all the sudden you have miles which are conveniently 1,760 yards. :flushed: At least on land, at sea it’s a little bit different.

Ok, so what if you want to go smaller than an inch? Oh, then we just divide by 10. tenths, hundredths, thousands (which we affectionately call “thous”) :zipper_mouth_face:

So, are those multiples between different units the same for volume or weight? Of course not! those all have their own units and conversions!

I can’t imagine how much time kids “waste” learning all these conversions

On the other hand, it is a little bit of a habit as well. For example screen sizes I can only visualize when the diameter is in inches. Whenever I see an ad showing a tv-screen saying it has a diagonal of 140cm I need to convert it to 55" to immediately be able to visualize it, lol.
So I understand inches, but most other units get lost on me. I would probably start naming them deca-inch or kilo-inch or whatever :stuck_out_tongue:

But I digress, this isn’t very relevant to the topic anymore :slight_smile:


No you got it all wrong, it’s 8 furlongs, which is 10 chains… EZ :rofl:

Also an acre is 1 chain x 1 furlong.


Except most people, if they can tell you the length of a mile, it’s still in feet, 5280.
I think it’s all those damn British king’s fault.


I generally draft out the part I want to make (roughly) before I try to model it. Particularly if I’m trying to make a replacement part, just use the cm side of the ruler instead of the " side, and write down what my drawing:actual ratio is.

I suspect the actual reason is that the Snapmaker team is based out of China, and it never occurred to them. FWIW, Cura doesn’t support Imperial either, but they do it explicitly to reduce confusion. The suggestions I’ve seen for Cura is to do all your work in mm pretending that a mm is an inch. Then when you import, scale it from 100% to 2540% percent (25.4mm to the inch, converted to %). Or if working in mm is too small, pretend 1mm is 0.1", and scale your work from 100% to 254%.

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