这个我打算买个不带电池的纯机器，希望能降到２００以内。

主要是选择合适的vent cover，在vent cover和siding结合的地方要加caulk或者sealant，这个要根绝具体的siding材料来定。

这种高级货只有你买

Dewalt is coming out with a new 20V Max cordless rotary hammer, model DCH253. The new rotary hammer is rated as having the same power as Dewalt’s DCH213, and also features active vibration control for improved user comfort.

Features

1.7 ft-lbs impact energy
“SHOCKS” active vibration control
LED worklight
Variable speed trigger
0-1200 RPM/0-4500 BPM
Rotary + impact, rotary-only, and impact-only modes
360° side handle with depth rod
Factory-set clutch to reduce high torque reactions if bit jams or binds
DCH253M2 kit includes (2) 4.0Ah lithium-ion batteries, charger, and kit box
DCH253B bare-tool option
We have received numerous tips that the DCH253 is powered by a brushless motor, but have yet to receive official comment or clarification from Dewalt. If it is brushless, it won’t be the first – Bosch and Makita came out with their 18V cordless brushless rotary hammers over a year ago, and Milwaukee’s 12V Fuel brushless rotary hammer recently hit the market.

Whether built with a brushed or brushless motor, the kit’s 4.0Ah battery packs should keep you away from the charger for a reasonably long time.

The DCH253 is available in Europe and will soon be available in North America. A second new cordless rotary hammer model is also available in Europe, model DCH254. The DCH254 cordless rotary hammer has an additional feature the DCH253 lacks – a quick release SDS-Plus chuck AND a quick release 1/2″ 3-jaw keyless chuck. With the 3-jaw chuck you can use the rotary hammer (in rotary-only mode) with traditional twist drill bits as you would with a drill or hammer drill.
First Impression

Aside from a couple of new vent placements, a slightly different motor casing, and a higher price, there does not seem to be any major differences between the DCH213 and DCH253 rotary hammers. If I had to guess, I’d say that the new model has been redesigned on the inside for greater efficiency and runtime.

Vibration dampening on the DCH213 is excellent, and I can’t see any way that Dewalt could have improved upon it further.

One thing I am happy to see is that the mode-select markings are high contrast yellow-on-black. The markings on the DCH213 are not terribly difficult to read, but the DCH253 markings look leaps and bounds clearer.

小心哦，一般汽油发动机火花塞扭矩才28-30NM哦
标准3/8的棘轮扳手，稍微用力就到了。
没扭矩扳手的看火花塞的包装，有说明，如何不用扭矩扳手来安装。

尤其注意的是，塞入火花塞后，不要使用棘轮扳手，直接用手旋转套筒延长杆，千万别拧歪了。

谢谢推荐，带力矩调节的？
我那个10块还是15
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house wrap , 如 dupont tyvek
貌似用胶带再密封....

外墙从里到外有dry wall，insulation，sheathing，siding。sheathing和siding之间一般还有防水纸。

锯起来很容易。不过安装管道的话防水要处理好，最好自己先上网查一下。

哦，ralph原来是这个意思。。。谢谢两位。

我上次是普通火花塞扳手，拧紧后，又用老虎钳夹着再拧了半圈到一圈。下次要注意了，原来那么容易断。

我旧火花塞拆下来，确实用了蛮大力的 本帖最后由 新品种 于 2013-8-16 12:51 编辑

哇哦，你想换个缸盖么？

爬完果熊的第1期，好像没发现讨论批头的，螺丝批头，够用，性价比高，耐操的，有啥推荐不？最好是批头加套筒套装。。。哦，还有延长杆。

所有的冲击起子，批头都是通用的吧？

比如拧火花塞，拧下来时用冲击起子（我上次自己换，拧下来好累，要用老虎钳夹着火花塞扳手），拧进去的时候好像对力矩有要求就用充电起子。都套上延长杆加套筒。。。应该是这么操作吧

本帖最后由 新品种 于 2013-8-16 12:13 编辑

对了，不知道lz这款型号是多少？是不是型号不同用料有不同？

我让带那款裸机叫2410-20，加了电池叫2410-22，加冲击起子/充电器/包包后叫2494-22

还有2种m12系统的充电钻裸机型号是2407-20和2403-20（无刷，配的电池也不同）

2410-20他是这么写的

以下内容由 新品种 于 2013-8-16 11:49 补充
不过看图片，你的就是2410-20

靠，那我是不是可以去告Milwaukee，在美国还一告一个准，赢取整套Milwaukee还报销来回机票

谢谢，果熊也多次提到电池装在把手里面的，把手会太粗。我在百安居握过一个博世电池在把手里面的标价1000多的，感觉还行，但那次只是握握，没实际钻几个孔试试。

行星排还是尼龙包着的。。。那同档次的牧田和德伟呢？米沃琪与他们比有无优势？

那人我昨晚和早上wangwang问她辛苦费多少，下单没，都没给我回复，不知道她下单没。

aliburke兄，如果是你会选哪款呢？

老老实实买dewakt 980,985吧，不就重点么....