1kg = a Liter?

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rubendariocba
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1kg = a Liter?

Post#1 » Tue Feb 06, 2018 7:52 am

Hello friends, I want to know if one kilo equals one liter.

Thank you.

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mikej
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Re: 1kg = a Liter?

Post#2 » Tue Feb 06, 2018 9:05 am

Only when the density of the liquid is 1.0 (same as water).

Resin is a bit more dense, so 1 kg of resin is slightly less than 1 liter of resin.
Measure Twice, Cut Once.

rubendariocba
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Re: 1kg = a Liter?

Post#3 » Tue Feb 06, 2018 10:41 am

then how do I calculate the cost per piece knowing that my machine tells me that the resin consumption is 1.76 ml

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mikej
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Re: 1kg = a Liter?

Post#4 » Tue Feb 06, 2018 2:12 pm

Close enough to just use 1ml = 1 gram
Measure Twice, Cut Once.

Aaron RMW
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Re: 1kg = a Liter?

Post#5 » Tue Feb 06, 2018 3:31 pm

we charge customers a flat rate for prints rather than according to how much resin we use. that way we can give a quote immediately on customer inquiries rather than "well you have to send it and we have to see how much it will take to print".

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Robert Howle
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Re: 1kg = a Liter?

Post#6 » Tue Feb 06, 2018 3:34 pm

Do you mean cost to print or cost of cast metal. I use .9 times the weight of the cured model to determine metal needed.

Weight of print x .9 = approx. weight in wax*

Weight in wax x S.G. of metal to be used = metal weight of cast print (does not include sprues or button).

Just if u needed to know.

*The resin is approx. 1.1 times heavier than water (10%). S.G. of casting wax and water is 1.0

Robert Howle
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Aaron RMW
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Re: 1kg = a Liter?

Post#7 » Wed Feb 07, 2018 8:12 am

that would make sense. but I wouldn't want to include support structure etc. in a quote, unless I was trying to give myself a good amount of wiggle room; or punish a demanding customer :lol: .

rubendariocba
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Re: 1kg = a Liter?

Post#8 » Wed Feb 07, 2018 11:48 am

can someone tell me

How much is the cost of 1 milliliter of yellow resin?

thank you all answered.

Aaron RMW
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Re: 1kg = a Liter?

Post#9 » Wed Feb 07, 2018 12:01 pm

about $0.20. I'm estimating though. to find this I found the number of ml in a kg. for water which is close to the same SG as resin it's 1000 ml to a kg. divide the cost of a KG of resin by 1000 ml to get the cost. I would add a bit to the cost though since you lose some resin during cleanup too. Also a good rule of thumb when doing production work is to double your materials cost in the price you charge. This way for every one item you sell you should be able to produce 2 more, or keep making just one more but recouping your material cost on each sale so you actually make a profit still.

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Robert Howle
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Re: 1kg = a Liter?

Post#10 » Wed Feb 07, 2018 3:53 pm

I use 50 cents per print for all resins. Covers cost of resin, supports, etc. It's such a small percentage of a custom job that it's almost irrelevant.

Robert Howle
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