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| [#201] 電鑽 ＞＞#199....店舖開板不準.....;..,#200...有6分板...x2 ------------------------------------ i.e. 6分大芯夾板 ; 見E間 有張枱去開料, 應該好dd. https://goo.gl/maps/LzRsqKRTBViovbic6 我無幫趁 最後修改時間: 2021-06-21 23:15:08 |
cornercube 正式會員119.xxx.xxx.111 |
2021-06-21 22:55 | |
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| [#202] 電鑽 https://item.taobao.com/item.htm?spm=a230r.1.14.227.13ae610cL5uNU8&id=641505097678&ns=1&abbucket=17#detail  |
0925 正式會員 42.xxx.xxx.163 |
2021-06-25 01:25 |
| [#203] 電鑽 If I buy the drills as recommended, I would get at least 10. 2-3 hammering drills should be good enough. I would stay away from cordless one(got one), not enough power due to low voltage though convenience.(220V ac motor is more powerful) |
alexanderkoo 正式會員 223.xxx.xxx.181 |
2021-06-25 07:41 |
| [#204] 電鑽 https://www.bing.com/search?q=impact+energy&qs=n&form=QBRE&sp=-1&pq=impact+energy&sc=2-13&sk=&cvid=BE53C52631844EA48D6EC071FB7D4035 What is Impact Energy. Impact energy is a measure of the work done to fracture a test specimen. When the striker impacts the specimen, the specimen will absorb energy until it yields. 買東西要睇產品設計、質量和規格，2.0 J ＜ 2.6 J   最後修改時間: 2021-06-25 08:36:11 |
0925 正式會員 219.xxx.xxx.168 |
2021-06-25 08:23 |
| [#205] 電鑽 https://dc.uwm.edu/cgi/viewcontent.cgi?article=1091&context=etd 太長，抄一部份算喇。 3 Impact Energy Testing The previous chapters described the formulation of a mathematical model to describe rotary hammer performance, using an existing tool to demonstrate the operation of the model. In order to validate the model’s accuracy, samples of the modeled tool were tested following the European Power Tool Association (EPTA) test procedure 05/2009 – Measurement of single impact energy of rotary hammers and breakers (10). The two primary performance metrics recorded by this test are the average energy delivered to the test rod with each impact and the frequency at which impacts occur. 3.1 Test Fixture Impact energy was measured using a test fixture developed in parallel to the mathematical model by the Milwaukee Electric Tool test lab (11). The fixture was designed according to the specifications prescribed by EPTA 05/2009 (10). A schematic of the fixture can be seen in Figure 4-1.  The test fixture consists of four primary elements: the test rod, the strain gauge amplifier, the data acquisition system (DAQ), and the test concrete. Additionally, a holding fixture for the test rod, a verification device, and a frame on which to mount them and position them over the concrete block were constructed. The test rod is a bar of AISI 8630 steel 10mm in diameter, with features machined into the connection end of the rod that allow it to be installed into rotary hammers equipped with a SDS-Plus type bit retention device. The opposite end of the rod is domed with radius of 100mm to provide a consistent contact point with the concrete block. Four strain gauges in a Wheatstone full-bridge configuration were affixed to the surface of the rod at a distance of 150mm from the connection end. This position allows the strain gauges to accurately measure the first compression stress wave from each impact of the tool without interference from tension stress waves generated by the previous impact that are reflected from the contact end of the test rod. The strain gauges were applied to the rod in pairs. Each strain gauge in the pair were oriented 90⁰ relative to each other, while the pairs were located 180⁰ apart on the surface of the test rod in order to minimize the effects of temperature, bending, or torsion of the test rod (10). The gauge output leads were soldered to a connection header for connection to the strain gauge amplifier. The strain gauge amplifier was used to supply excitation voltage to the strain gauge bridge circuit as well as filter signal noise and condition the output signal from the 35 circuit. The amplifier was also used to zero out the signal generated by the application of a weighted fixture to the tool handle before the start of the test. The DAQ system consisted of two analog input modules mounted to an I/O chassis. The first input module has the ability to capture data at a 1MHz sampling rate and was utilized to acquire the strain gauge output signal via the strain gauge amplifier. The second module samples at 250kHz and was used to capture the output signal from the verification device. The DAQ system was linked to a Hewlett-Packard 8540w laptop running LabView. The verification device consisted of a barrel positioned below a pneumatic cylinder used to fire a metal slug at the end of a test rod. Two lengthwise slots were cut into the barrel 180⁰ apart from each other just above the test rod, through which a laser curtain was passed. The curtain was used to measure the displacement of the metal slug before and after impacting the test rod. The displacement measurements were in turn used to calculate the slug’s velocity prior to and after impact. The slug velocities were then used to calculate the quantity of the slug’s kinetic energy that was transferred into the test rod using Equation 2-59:  最後修改時間: 2021-06-25 10:44:05 |
0925 正式會員 219.xxx.xxx.168 |
2021-06-25 10:33 |
| [#206] 電鑽 1.0J 通常有乜用？ |
哇哈哈 正式會員 123.xxx.xxx.30 |
2021-06-25 21:16 |
| [#207] 電鑽 https://manuall.co.uk/ikea-fixa-rotary-hammer/ 呢把？   最後修改時間: 2021-06-25 21:34:27 |
0925 正式會員 219.xxx.xxx.168 |
2021-06-25 21:33 |
| [#208] 電鑽 #207 Oh my 吉！ 有乜貴兄係唔識架？ |
哇哈哈 正式會員 123.xxx.xxx.30 |
2021-06-25 23:03 |
| [#209] 電鑽 將來貢生活 https://m.youtube.com/watch?v=fyfxB_SqWtc |
哇哈哈 正式會員 124.xxx.xxx.58 |
2021-06-26 16:57 |
| [#211] 電鑽 原打算圖文並茂，而家打字先………… 而家應該改用足六分板，18mm?。但真心考究，拼除行情說法，大心or細芯承重較好？ 我認為細心，因為接觸面大而廣。大心木條彼此之間有弱線。 不過有一樣嘢，就是產品行情怎樣？肉眼上分不到…… 不計訂做(零售買唔到) 小弟手頭係收集咗好一些資料，但要慢慢寫先带到結論，懶住先……………… 最後修改時間: 2021-07-03 21:39:39 |
哇哈哈 正式會員 218.xxx.xxx.42 |
2021-07-03 21:39 |
| [#212] 電鑽 拿起來的感覺是~怎麼會有這麼輕的木板@@! 問了師父才知道 木芯板還是有分等級…… 像這種就是廢料再拿去重新壓製 多用在展場裝潢上…… 也有鋪地用…… 肉眼難分 my 吉 |
哇哈哈 正式會員 218.xxx.xxx.42 |
2021-07-03 21:54 |
| [#213] 電鑽 https://detail.tmall.com/item.htm?spm=a230r.1.14.12.6c2b7944OYILcV&id=615734608786&ns=1&abbucket=7&skuId=4549721338152 以前經常去日本城買松木板，而家唔見有得賣，好似 Ikea 仲有，淘寶有實木板賣，松木板就比較便宜，唔知哇哈哈兄個托架係點設計，驚 5分 唔夠力邊位可用鋁角加固或買兩塊用白膠漿/木膠貼在一起再上螺絲釘加固。   最後修改時間: 2021-07-03 22:41:02 |
0925 正式會員 219.xxx.xxx.83 |
2021-07-03 22:40 |
| [#214] 電鑽 …… 0925 兄，我是砌層板櫃呀。 跟宜家嗰D, 改一下大细，並用吊躺門，simple?' 出去睇板。敲吓聽下，指甲鎅下，有D軟有D是硬。所以推斷一下: 軟夾層的夾板，是用了合歡木(南洋馬六甲)在之間，面、底 用番硬身木。 另外有d是臨工、舖地、間房之类，都係唔知點睇、外表是一樣。 鋪地夾板是一間木行女女講我听…… 貢點解我揾唔番以前見過嗰d架？ 嗰一刻只有唸起: 劣幣驅逐良幣…… 但是出面ikea/M記 重有，最後咪比老師父點通: 傻仔，木行冇，咪係因為人地係訂做囉。 哈哈。 上星期有唸過改用MDF + 透明epoxy 包覆。但原來本地MDF 唔平。 0925 兄主意好， 用鋁角。Good! 除了鋁，有冇相类似金屬角？ 鋅鐵？ 我希望盡量隱藏接合部分，所以夠力夠薄就做到了。 之前揀4分就是這原因。 如果傢俱桂身粗大，則會產生它存在感壓迫感。 屋身，最好樣樣幼。 |
哇哈哈 正式會員 219.xxx.xxx.14 |
2021-07-03 23:57 |
| [#215] 電鑽 最後得出嘅結論係:嘟係睇市埸有咩揀。 大陸松木較軟、節眼多，你買來做乜東西？好奇。 我都喜歡它的幼幼紋路，會在成品上鋪一片薄薄裝飾，而且是設計成可更換: 歐松板、cherry wood, 雀眼…… 最後修改時間: 2021-07-04 00:06:09 |
哇哈哈 正式會員 219.xxx.xxx.14 |
2021-07-04 00:02 |
| [#216] 電鑽 砌層板櫃呀＜ 方法有好多，post 相上來睇下乜結構至可以俾意見。 |
0925 正式會員 219.xxx.xxx.83 |
2021-07-04 00:04 |
| [#217] 電鑽 冇呀，just 層板+躺門 就就是中間一層要1.2米全開，因為我做嘢要灘開哂d東西文件…… 其他層格就用金屬承底，或是用多一塊垂直板  |
哇哈哈 正式會員 219.xxx.xxx.14 |
2021-07-04 00:16 |
| [#218] 電鑽 https://decomyplace.com/n.php?id=9064 第四張圖，右邊。 |
哇哈哈 正式會員 219.xxx.xxx.14 |
2021-07-04 00:27 |
| [#219] 電鑽 just 層板+躺門＜ 如果係大櫃開口用吊躺門，個櫃中間想加塊 1.2M 濶層板，可在櫃背壁內加條橫木方或加條橫鋁角。 大陸松木較軟、節眼多，你買來做乜東西？好奇＜ 我床腳有個 48吋濶 x 34吋高 x 16吋深 6分厚(背板都係6分松木)大碌國松木板造的兩層掛牆櫃(頂放 PC & INT amp; 上層放 ATC spk,、相機鏡頭、裝 16吋 KDK掛扇；下層一邊放衫、中間放 mon、charger & keyboard 和另一邊放滿電子嘢)應該超過 200磅 掛咗廿幾年仍非常穩固。 下圖係一個非常淺掛牆櫃，用一條橫方托底部，背板係貼防火板的6分雜木板，上、下、左、右係日本城買的6分松木板，用兩吋膠塞上牆，櫃頂有個 4mm厚 不鏽鋼直角上橫樑。  最後修改時間: 2021-07-04 01:04:12 |
0925 正式會員 219.xxx.xxx.83 |
2021-07-04 00:53 |
| [#220] 電鑽 https://www.amazon.com/gp/product/B0756BG1X9?ref=em_1p_2_ti&ref_=pe_25592920_590825670 見咁抵差點中計，原來呢個品牌...................。  最後修改時間: 2021-07-04 14:27:17 |
0925 正式會員 219.xxx.xxx.14 |
2021-07-04 14:08 |
