R>28. 滑块拆的位置 (The split line of slide block or the area of slide.)
29. 此处有尖角，填充困难 (It is hard to fill this area due to the sharp feature.)
(The strength of this area is too weak and it is hard to cool because the steel is too thin.)
(We avoid designing the semicircle of the cylinder on the slide block because it will be pulled
apart or cause drag marks.)
(The part will be damaged if we make the lifter in this area.)
(This is a critical surface where we cannot add additional material.)
(Because of the shrinkage of the thickness, we suggest reducing some wall thickness to improve it.)
"(Please confirm whether it is a critical surface or not. Also, confirm whether it is acceptable to
have a slide
split line if we have a slide in this area. )"
"(Please confirm whether we can reduce material to the area where we have an undercut as indicated
to have shut off
on cavity side. No slide block and lifter will be made. )"
(Please confirm the issues of Parting line, Gate position...Etc. as soon as possible; otherwise,
the lead-time will be extended.)
(Please confirm whether it is a critical surface or not and if we can have E.J. pin marks on it.)
(There are sharp edges if we set the parting line here, It will reduce the tool life)
40. 加大拔模角，以便脱模顺利 We suggest enlarging the draft angle to help release the tool.)
41. GATE做在此处的话有两个缺点：1.盖子打开时可以看到GATE的修剪部位; 2.两个斜销在同一侧，顶出也不是
(There are two problems if the gate is to be designed in this area:
a). It is easy to see the gate mark when you open the cap.
b). The ejectors are unbalanced when two lifters are on the same side)
(The gate mark is not visible if the gate position is designed like this.)
"(If you insist that the gate position has to be like the original design, then we would further
recommend to have
it to the area indicated so it can avoid a shrink problem in this area.)"
(If the design of the gate has to be a sub. Gate, then the back surface of the part will have
serious flow marks due to the black colour.)
"(This area is not suitable to have a Parting line because the tool will become more complicated;
we recommend to have the Parting line as indicated.)"
"(There is possible sticking on cavity; therefore, please confirm whether it can make undercuts,
or leave coarse E.D.M. on the core to snatch the part on) "
(Please confirm whether it is acceptable to have stress lines on the surface because the thickness
is not equal.)
(Please advise where the critical surface is. Please also provide us a 2D drawing with critical
(Please note the red highlights because those areas have problems.)
(We would suggest using the attached part design as the current design has problems.)
50. 此处改为一个球形的凹槽 (We suggest modifying it as a globe recess.)
51. 圆柱特征要有一半不可以拆在滑块里，以防拉断 (this issue is the same as no.8)
(The inside small slide block will recede first and the parent slide block have to postpone
(The slide pins will use an oil cylinder to assure that the process is in proper order.)
"(We cannot add material to this surface because it will intervene between the two parts when it is
Please see the sketch attached. )"
(To descend the surface of lifter in order to thicken the part.)
56. 一半做斜销，一半做自然 (One half side will have the lifter and the other half will be
"(These two bosses are overlapping with undercut therefore it can not be made as solid. We
suggest making it with a slide block.)"
58. 此处强迫顶出 (This area needs force ejection.)
59. 公模两段开模，这个地方先退 (Here will be a double ejection for forward and receding.)
60. 此处做镶件会有夹线，能否接受 Please confirm whether it is acceptable that there will be a
split line here.)
(Please confirm whether it is ok to have mismatch to the area where there is 1 degree of shut off
in Core / Cavity side.)
62. 这个尺寸能否加大 (Please confirm whether we can enlarge this dimensio