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Make 3D Printer Guide 2015 scores

Name Total Score $ Price Vertical Surface Finish Horizontal Surface Finish Dimensional Accuracy Overhangs Bridging Negative Space Tolerance Retraction Performance Support Material Z Wobble
LulzBot Taz 5 35 2200 5 5 4 5 5 2 5 2 2
Zortax M200 34 2000 4 5 5 5 5 4 4 0 2
SeeMeCNC Rostock Max v2 33 999 4 4 4 4 4 5 4 2 2
Fusion F306 32 2975 4 4 5 5 3 4 5 0 2
LulzBot Mini 32 1350 4 4 4 5 4 3 4 2 2
Deezmaker Bukito 30 849 4 5 4 2 3 4 4 2 2
PowerSpec Ultra 3D 30 799 4 5 4 2 3 4 4 2 2
Ultimaker 2 Extended 30 2788 4 5 5 1 3 4 4 2 2
Ultimaker 2 Go 30 1335 4 5 4 2 3 4 4 2 2
BeeInSchool 28 1647 2 4 5 4 5 1 3 2 2
Dremel 3D Idea Builder 28 999 2 4 5 4 5 1 3 2 2
Printrbot Play 28 399 2 4 5 4 5 1 3 2 2
Printrbot Simple 28 599 4 5 3 1 4 3 4 2 2
Up Box 27 1899 2 5 4 2 2 5 3 2 2
XYZ da Vince 1.0 Jr 24 349 3 4 4 3 3 0 3 2 2
IdeaPrinter F100 19 1200 2 3 3 4 1 0 2 2 2
M3D Micro 18 349 3 2 2 2 2 1 2 2 2
Polar 3D 13 799 2 2 1 2 2 1 1 2 0
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Scythians 斯泰基 塞種 西古提人

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calculate pH of phosphoric acid

Question: adding 1/4 teaspoon of 10% phosphoric acid  to 19 litres of water, what will be the pH? Let's go through the calculations step by step. Step 1. Convert mass ( or volume) of 10% phosphoric acid to mole per litre ( mol/L) The above calculation shows that 1/4 tsp of H3PO4 acid is 6.97e-5 mol/L Step 2. Input this value to BATE (or other app) to calculate pH The answer: pH = 4.16, ie too acidic !? If you use pipette instead of teaspoon,  1 drop = 0.05ml. So 1/4 TSP means roughly 25 drops If you actually aim for pH 5.6 (which is optimum pH for mashing), conc will be 2.51 e-6, or 1/100 tsp , 0.044 ml, roughly 1 drop Let's roll back a bit. From  recipes of   BarleyWine , summer rye , hefe Gordon Strong suggested to use 1/4 teaspoon of 10% phosphoric acid, which is targeting pH of 5.5..... Discussion on  homebrewtalk  forum. However using online BF water calc , Sparge pH would be 4.6. but he also added 1 tsp of CaCl2. 2H20. Mash pH change from 5.7 t...
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ES8311 and ES8388 codec IC

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