02-06-2011, 05:31 AM
Thanks again for your kind compliments. I think this all will need a bit experiences only and all will be repeatable.
Doc Wayne, thank you for your searching in PSC loco catalog. I have found the mentioned items however they look different to the retaining valves for freight cars. And thanks for your infos about the different locations of these valves. My own problem is that I did not study enough my pictures for positioning these valves and so I think that I must move them down one or two millimeters to the lower board in one of next steps.
Sumpter250, thanks for your additions in sizes of drill bits. Before writing this text a have searched a table of American drill bit sizes and smallest that I have found was size #80. So I must write diameter of my small drill bit in millimeters and decimal inches. And they are breakable, also! However they are many more elastically than my 0.3 mm drill bits (near to the #80 – this would be exactly 0.3249 mm). I reality I use drill bits with a 0.32 mm diameter because so I can insert easily the 0,3 mm wire to the holes.
The problem in using such fine drill bits is my different handling. I use the 0.3 mm drill bits with a small electric hand drill. On other side drilling these fine 0.2 mm holes were drilled by turning the drill bit between two fingers – however that was plastic that I have had to drill. The problem will follow in next time where I must build a few fine brass parts for an other project and there I must insert also a few holes with a 0.2 mm dia for simulating fine rivets. Using the hand drill in this case? I think that not another way will exist.
Getting such fine tools is also here in Germany a problem. I have searched for drill bit makers and I found two brands and after I searched whose tool markets with a very thin result. So I’m buy these things directly from the producer – pricing sample for one 0.2 mm drill bit: $13.50 plus tax $2.50 + sh.
Saying to my wife – I will need only a few wood strips and wires for my modeling jobs however I know that she does not trust my words.
Doc Wayne, thank you for your searching in PSC loco catalog. I have found the mentioned items however they look different to the retaining valves for freight cars. And thanks for your infos about the different locations of these valves. My own problem is that I did not study enough my pictures for positioning these valves and so I think that I must move them down one or two millimeters to the lower board in one of next steps.
Sumpter250, thanks for your additions in sizes of drill bits. Before writing this text a have searched a table of American drill bit sizes and smallest that I have found was size #80. So I must write diameter of my small drill bit in millimeters and decimal inches. And they are breakable, also! However they are many more elastically than my 0.3 mm drill bits (near to the #80 – this would be exactly 0.3249 mm). I reality I use drill bits with a 0.32 mm diameter because so I can insert easily the 0,3 mm wire to the holes.
The problem in using such fine drill bits is my different handling. I use the 0.3 mm drill bits with a small electric hand drill. On other side drilling these fine 0.2 mm holes were drilled by turning the drill bit between two fingers – however that was plastic that I have had to drill. The problem will follow in next time where I must build a few fine brass parts for an other project and there I must insert also a few holes with a 0.2 mm dia for simulating fine rivets. Using the hand drill in this case? I think that not another way will exist.
Getting such fine tools is also here in Germany a problem. I have searched for drill bit makers and I found two brands and after I searched whose tool markets with a very thin result. So I’m buy these things directly from the producer – pricing sample for one 0.2 mm drill bit: $13.50 plus tax $2.50 + sh.
Saying to my wife – I will need only a few wood strips and wires for my modeling jobs however I know that she does not trust my words.
Cheers, Bernd
Please visit also my website www.us-modelsof1900.de.
You can read some more about my model projects and interests in my chronicle of facebook.
Please visit also my website www.us-modelsof1900.de.
You can read some more about my model projects and interests in my chronicle of facebook.