Plastic bearing-How to Clean Skate Bearings

Skate bearings gslide bearingenerally last a long time and require little maintenance。 If you ride them in the rain or through some puddles thenPlastic bearing it might be a good idea afterwards to give them a strip and regrease just to stop them rusting too fast。 Many people keep an old knackered set of bearings specifically for sliding and skating in the rain。 Saves you rusting up those brand new bearings you just got for your speed board！

Take the nut off the axle and slide the wheel along the axle so that the innermost bearing is just on the edge of the axle。 Using the same kind of motion as you would to open a bottle of beer， prise the bearing out of the wheel。 Flip the wheel over and repeat。

Once you€¬€ve got your bearings out of your wheels， you need to get inside the cartridges。 If you€¬€re lucky your bearings will only have a single shield， but most likely you€¬€ll have to take one of the shields off so you can get to the balls and cage。 With a rubber shielded bearing this is easy - just prize one shield off with a small screwdriver。 Unless you are VERY careful you€¬€re probably going to damage the shield taking it off - but that€¬€s OK， you only really need one on each bearing。 Metal-shielded bearings have a €¬…€C€¬ clip round the outside of the race that you€¬€ll need to take off。 On some bearings it is possible to remove the balls and cage from the race entirely for individual cleaning - but unless you really have nothing better to do it´s not really worth it。

Next you need to get all the old crap and grease out of your bearing races。 Avoid using WD40 - the best bet is to use methylated spirit or just soak the bearings in some solvent or alcohol。 Lemon juice works well too！ Soak your bearings in your chosen liquid try putting the bearings in a jam jar and shake the bejeezus out of them for about 2 minutes， then rinse them with some more clean solvent。

Regreasing:

Dry them off (hair dryers are handy here) relube them with a touch of oil or grease。 You don€¬€t need much lube in there so don€¬€t go too crazy！ The thinner your lube， the faster your bearings will spin， but the more prone to destruction they will be。 Oil makes your bearings mega fast， but if any crap at all gets in there your bearings will be toast。 Plus oil has a nasty tendency to spin out of the bearing at speed leaving your bearings without any lubricant， which leads to overheating bearings and melting wheels。 Not cool€¬¦ but maybe worth loOKing at if you really like cleaning bearings。 On the other end of the spectrum is medium grease like the white stuff you can get at a bike shop。 If you use this your bearings will be much more resistant to crap and should last a lot longer， especially if you ride in the rain a lot - but the flip side is that they€¬€ll spin slower。 Really your best bet is a skateboard bearing specific lubes like Powell Speed cream or similar light grease。

sintered metal-Scientists Build a Low-Cost

OK， so maybe youpowder metal aren´t interested in making your own toys， cellphone cases， or glow-in-the-dark Christmas decorations。 How about a brake drum?
Until now， 3D printing has been a polymer affair， with most people in the maker community using the machines to make all manner of plastic consumer goods， from tent stakes to chess sets。 A new low-cost 3D printer developed by Michigan Technological University´s Joshua Pearce and his team could add hammers to that list。 The detailed plans， software and firmware are all freely available and open-source， meaning anyone can use them to make their own metal 3D printer。

Pearce is the first to admit that his new printer is a work in progress。 So far， the products he and his team have produced are no more intricate than a sprocket。sintered metal But that´s because the technology is so raw。 "Similar to the incredible churn in innovation witnessed with open-sourcing of the first RepRap plastic 3D printers， I anticipate rapid progress when the maker community gets their hands on it，" says Pearce， an associate professor of materials science and engineering/electrical and computer engineering。 "Within a month， somebody will make one that´s better than ours， I guarantee it。"

Using under $1，500 worth of materials， including a small commercial MIG welder and an open-source microcontroller， Pearce´s team built a 3D metal printer than can lay down thin layers of steel to form complex geometric objects。 Commercial metal printers are available， but they cost over half a million dollars。
His make-it-yourself metal printer is less expensive than off-the-shelf commercial plastic 3D printers and is affordable enough for home use， he said。 However， because of safety concerns， Pearce suggests that for now it would be better off in the hands of a shop， garage or skilled DIYer，powder metal since it requires more safety gear and fire protection equipment than the typical plastic 3D printer。

While metal 3D printing opens new vistas， it also raises anew the specter of homemade firearms。 Some people have already made guns with both commercial metal and plastic 3D printers， with mixed results。 While Pearce admits to some sleepless nights as they developed the metal printer， he also believes that the good to come from all types of distributed manufacturing with 3D printing will far outweigh the dangers。

In previous work， his group has already shown that making products at home with a 3D printer is cheaper for the average American and that printing goods at home is greener than buying commercial goods。

In particular， expanded 3D printing would benefit people in the developing world， who have limited access to manufactured goods， and researchers， who can radically cut costs of scientific equipment to further their science， Pearce said。 "Small and medium-sized enterprises would be able to build parts and equipment quickly and easily using downloadable， free and open-source designs， which could revolutionize the economy for the benefit of the many。"

"I really don´t know if we are mature enough to handle it，" he added cautiously， "but I think that with open-source approach， we are within reach of a Star Trek-like， post-scarcity society， in which ´replicators´ can create a vast array of objects on demand， resulting in wealth for everyone at very little cost。 Pretty soon， we´ll be able to make almost anything。"

Solid Concepts 3D prints world´s first metal gun
3D printing company Solid Concepts has announced that it has 3D printed the world´s first metal gun€"other guns printed using 3D printers have been made of plastic。 Representatives for Solid Concepts say they created the gun to demonstrate how strong and accurate products made using 3D printing technology can be。

Over the past year， reports of guns being printed using relatively inexpensive 3D printers have raised concerns regarding a new way for people to gain access to weapons。 Such concerns have died down， however， as newer reports have pointed out the weaknesses of plastic guns€"they don´t last more than one or two firings。 That´s not the case with the gun printed by Solid Concepts€"engineers there fired their weapon over 50 times， with no apparent problems。

Printing with metal instead of plastic requires a whole new level of printer€"one so expensive that most could not afford to buy or even rent one， thus， news of a printed metal gun isn´t like to spark much if any controversy。 It does however， as the company that printed the gun points out， highlight just how far 3D printing has come。 In this case， the printer uses what is known as a direct metal laser sintering (DMLS) process€"metal powder is heated to create a type of ink that can be used for printing。 In the past， the process has been used to create surgical implant and aerospace parts。 The newly printed gun， created using blueprints of a real handgun formerly used by the US military， was made by printing almost all of the parts€"it was finished by assembling by hand。 No machining was necessary， just some hand tooling。 The process even included rifling (grooves inside the barrel that cause the bullet to spin as it´s ejectedsintered metal) to ensure accuracy。

Reps for Solid Concepts also note that printing their gun was completely legal€"the company holds a Federal Firearms License。 They add that the metal in their gun has less porosity than poured metal and allows for more complexity than metal that is cut using lasers。 They hope to begin selling hard-to-find gun parts to manufacturers in the very near future。

新生兒命名-好名字的標准

好名字的標准1：名字是否與命運緊剖腹生產擇日密相連

　　根據八字來取名字，首先要看合和術名字對命主的命運分析是否正確。命中陰陽五行的缺陷是否可以得以補救，姓名是否符合寶寶的感情復合性格，名字三才是否合適，是不是沒有對寶寶健康不利的因素。通俗的來說，給寶寶取名字是有明確的目的，一定要符合寶寶的自身性格。

好名字的標准2：名字要響亮好聽

　　如果自身名字的意境非常好，但是讀起來有不雅的諧音，也不能算作是個好的名字。在取名字的時候要避免三個字同音，要盡量選擇聲調不同的字，以産生讀音抑揚頓挫的音美效果。

好名字的標准3：名字的結構要美觀

　　雖然漢子都是方塊字，但每個字的形狀都是不一樣的，兩個字或者三個字在一起更是千姿百態了。名字要符合字形美的要求，字形排列要整齊，上下左右要對稱。

好名字的標准4：名字的意境感情挽回要完美

　　名字的意境是姓名和合術文化的重要主題，姓名用字的意境是非常的豐富的，取名字必須要挖掘姓名包含的多種意義，進行縱橫的比較，看是否適合命主，是否對命主起來激勵促進的作用。最主要的一新生兒命名點是，姓名一定要富有新意，不要太過于俗氣。

台中室內設計-家居裝修如何避免浪費 剛需族必知的兩大技巧

：裝修有余料在所難免，大宗的如瓷室內設計磚等主材有剩余可以退貨，但其他的材料如電燈開關、膩子粉、防盜門、水泥、沙子、乳膠漆等如果扔掉，不但浪費，有些對環境也是非常嚴重的汙染。不少人會將自己家裝的余料信息發布。。。

　　一：用剩的材料想法賣掉

　　裝修有余料在所難免，大宗的如瓷磚等主材有剩余可以退貨，但其他的材料如電燈開關、膩子粉、防盜門、水泥、沙子、乳膠漆等如果扔掉，不但浪費，有些對 環境也是非常嚴重的汙染。不少人會將自己家裝的余料信息發布到一些裝修論壇，尋找買家，而另一些裝修或是改裝的人正需要這些材料，往往喜歡上網購買物美價 廉的材料，如此實現了剩余材料科學利用。還有的台中室內設計裝修業主將自家的裝修余料，通過論壇與別的業主交換自己所需的材料，都可以很好地降低裝修浪費。

　　二：把好裝修設計關

　　專家提醒消費者，做裝修設計一定要仔細考慮各個環節，盡量一次定奪，避免裝修過程中再進行修改，造成一些不必要的浪費。有些設計師爲了提高造價，往往室內設計慫恿消費者增加很多不實用的增項，所以一定要把好設計關，應提倡簡約、實用的設計原則，簡約裝修不僅減少浪費，還可以減少汙染，因爲裝修材料用得越多，汙染程度越高。三：傾向精裝修和集成家居針對裝修造成的浪費，建設部多年來一直提倡精裝修房台中室內設計，因爲這樣能減少裝修帶來的多方面浪費。所以從節省裝修費用的角度，可以購買精裝修成品房，如果裝修也可以選擇那些具有多品牌整合功能的裝飾，因爲集成家居裝修在主材購買時業主可以享受更多的品牌優惠，提高裝修工程的性價比。

桃園矯正-牙齒矯正要趁早

　　門牙往前突，俗稱“大龅牙”。桃園矯正很多人都看過周星馳和莫文蔚演的 《食神》，莫文蔚顛覆傳統形象，廟街大姐火雞那一口大龅牙絕對符合周星馳喜劇的效果，絕對爲無厘頭增色不少。不過，要是在現實生活中，龅牙帶來的不便真不 只是影響吃東西那麽簡單，還會影響形象，甚至于影響工作、生活、愛情……而且，龅牙還會因爲受外傷桃園植牙而 折斷。門牙前突，患者會增加門牙外傷概率30%。如果“大龅牙”患者在年幼的時候受到了外力的創傷，而沒有及時處理或者處理不當的話，往往會導致牙根不穩 固，所以在成年後受到外力撞擊的話，也更容易導致牙齒摔斷等情況。成年人洗澡的時候，由于浴室地面比較滑，不慎滑倒的話，從而導致門牙脫落。女孩子 10－12歲矯正是最好的，男孩子11－13歲矯正牙齒是最好的。這是因爲什麽呢？因爲這個時候乳牙剛剛替換完，所以矯正起來比較好。

　　需要提示您的是，小孩在換牙的時期是不可以做矯正的，因爲這樣對孩子的颌骨骨骼發育不好。矯正的方法是很多的，您可以選擇適合您的方法來進行矯正。活動矯治器，功能矯治器，固定矯治器，正颌外科都是可以選擇矯正牙齒的方法。

　　其實，牙齒美容冠矯正不僅可以改善牙齒前突帶來的不便，最重要的還能通過矯正改善面貌。曾經有一位二十多歲的女孩子，長有一口“大龅牙”，由于小時候 錯過了最佳矯正時間，現在面臨著找工作，擇偶等衆多問題，往往被無情的淘汰。當今社會對外表的要求越來越高，外表和學曆同樣重要。

喜餅推薦-飯後甜點 楓糖核桃肉桂卷

　　平時很多人吃完飯後都喜歡吃一喜餅推薦些甜點，接下來，給大家帶來了一份既美味又特彌月蛋糕推薦別的甜點——楓糖核桃肉桂卷，看者有份。

　　肉桂很美味，加上楓糖，做成一道楓糖核桃肉桂卷甜點，節日用來招呼客喜餅禮盒人也很不錯。

　　主料：高筋面粉270克，低筋面粉30克，核桃仁80克。

　　輔料：酵母3克，肉桂粉15克，雞蛋液70克，鹽1克，白糖20克，牛手工喜餅奶13毫升，黃油30克，楓糖漿40克。

飯後甜點 楓糖核桃肉桂卷

制作方法：

　　1、先把核桃仁放到烤箱裏烤出香味，然後拿出放涼。

　　2、除台中伴手禮黃油外的面團原料揉成團，牛奶先保留30毫升，看面團幹濕情況再加，加入黃油揉至面團可以撐出大片的薄膜。

　　3、把面團滾圓，收口朝下捏緊，放入塗抹少許黃油的盆中，蓋上保鮮膜，放入冰箱冷藏室8-12小時。

　　4、冷藏發酵後的面團，大約發至2。5倍大。

　　5、一發好的面團排氣，再次滾圓，蓋保鮮膜，松弛20分。

　　6、松弛好的面團擀開，呈30×40厘米的長方形。

　　7、在面團表面撒上肉桂糖粉，再均勻地鋪上2/3的核桃仁，輕輕用手按一下，長邊下端留一段不放料，從長邊上端開始卷起，最後將收口處捏緊。

　　8、將卷好的面團均勻地切成9份，或者先三等分，再三等分。

　　9、表面噴些水，放入烤箱，同時放一碗熱水，開啓發酵功能，發70分鍾。

　　10、台中甜點蛋糕取出面團，同時烤箱預熱170°，在面團表面刷喜餅品牌上蛋液，並撒上剩余的核桃仁。

　　11、把面團放到烤箱烤20分鍾，至表面呈金黃色，然後拿出刷上楓糖漿即可。

　　烹饪技巧：在卷時收口處一定要捏緊，不然第二次發的時候容易裂開。

聖誕餐會-茶會禮儀介紹

節日或農閑日子，幾個侶伴一同出遊生日Party或趕會，就常醞釀出 一個茶會。途中遇到中意的集體（自然爲異性青年群）就邀請。邀請形式不拘，常以嬉樂開始。邀請一方中的一人想法接近對方中的她（他）的身旁，出其不意地搶 去他（她）的頭巾或帽子，然後嘻笑著跑開。被槍者則作出堅決要討還東西的樣子，緊追不舍，跑離人群後，兩人即可協商，約好時間和地點，到時雙方就在既定時 間相會，一會兒便開始唱歌，歌聲起處，茶會儀式就開始了。

雙方邊唱邊走，緩緩來到房舍。一路上借物三詠歎，直唱進家中正屋火塘邊。分賓主坐定後繼續唱和。火塘邊備有糖茶水潤喉。至午夜時分，邀請的一方獻上湯元、米酒供大家吃喝。直至次日晨曦臨空時，方終止而散。

甘南夏河縣的藏族，每到外燴新春佳節就舉行“鬥姆”，意爲歌會。這種 活動是由出面主辦人准備茶和酒及場地，還要准備木柴，供晚間烤火用。歌會開始時，賓主各一方，成半圓形，另一邊是盛裝的婦女，首先主方男子起來，一手端著 酒杯，一手拿著帽子，慢慢地移動著腳步，唱著贊歌，邊唱邊選擇客方的對象，然後請客方接著唱。對方也以同樣的姿態和形式接唱。這樣往返不已，不時還有婦女 出場跳舞。

到了晚上就轉爲對唱情歌外燴服務（當地藏語叫“拉依”）。男女分坐。首先男方起來，一手拿著帽子，另一手作某社區聯誼種手勢，邊唱邊走向女方，到他選好的對象面前，用帽子蓋一下女方的頭，這就是請這位婦女接唱，女方不離座位就唱起來了。歌手們對歌時，在場的人們靜靜地聽著，唱完一曲尾牙總是發出一陣吆吼聲，喝彩助興。

這種歌會，給藏族青年男女提供了一個正當的社交活動場合
茶會的禮儀

會議、茶會，由于出席人數較多，入場也較集中，一般不采用高杯端茶的方法，而是提前將放有茶葉的高杯擺在桌上，在活動開始前，由服務員用暖瓶直接在桌前往杯中雞尾酒會倒水。采用這種方法上水的優點是快捷、便利，但要注意防止出現漏倒空杯的情況。服務員倒過水後，要逐杯加以檢查。檢查時，可用于觸摸一下杯子的外壁，如果是熱的，表明已倒過水，如果是涼的，說明漏倒水了，要及時補各式茶會倒。
續水，一般在活動進行30--40分鍾後進行。如果往小茶杯中續茶水，應將一把茶壺茶，經過濾倒入另一把茶壺，然後再聖誕餐會續水。倒續水時瓶精緻餐盒口要對准杯口，不要把瓶口提得過高，以免濺出杯外。如不小心把水灑在桌上或茶幾上，要及時用小毛巾歐式外燴擦去。不端下茶杯，而接在桌上或茶幾上往杯中倒水、續水，是不符合操作規範的。

在往高杯倒水、續水時，如果不便或沒有把握一並將杯子和杯蓋拿在左手上，可把杯蓋翻放在桌上或茶幾上，只是端起高杯來倒水。服務員在倒、續完水後要把杯蓋蓋上。注意謝師宴，切不可把杯蓋扣放在桌面或茶幾上，這樣既不衛生，也不禮貌。如發現賓客將杯子放在桌面或茶幾上，服務員要立即斟換，用托盤至托上，將杯蓋蓋好。

倒水、續水都應注意按禮賓順序和順時針方向爲賓客服務。