07-22-2012, 06:23 PM
Guys,
Thanks for responding.
The hole is about 5.7mm in diameter. I believe it to be done using a 5.5mm drill as the hole I did using a 5.5mm produced the same reading on the small hole gauge measures the same 5.7mm.
Steve, the depth gauge I have has a shallow hole (like a counterbore) that is just about the size of the surface where the countersunk hole is. So I couldn't sit the part on it properly to start. Further, I can see the plunger in the hole to do the measurement. The tail of the vernier roughly measures about 1.5 to 1.6mm in depth. I measure the length of the slope to be about 2.5mm using a piece of steel wire and the nail of my thumb to mark the distance. But I'm not sure I'm measuring right.
Gene, I do not have a sine plate. Didn't get one as it seems rather complex to use.
Sunset, I use GWizard that has a trig calculator. I'll try the DTI method you mentioned later.
Update: I dug out the angle gauge and use the 2 pieces marked with 30 degree and 45 degree. It fits the one with 30 degree better than 45. So I think it might just be 60 a degree countersink though the result I get doesn't really look like the same on the sample piece. Think it may be easier to measure the dimensions off the machine it is supposed to be used on. I'll try to make time.
Regards,
Wong
Thanks for responding.
The hole is about 5.7mm in diameter. I believe it to be done using a 5.5mm drill as the hole I did using a 5.5mm produced the same reading on the small hole gauge measures the same 5.7mm.
Steve, the depth gauge I have has a shallow hole (like a counterbore) that is just about the size of the surface where the countersunk hole is. So I couldn't sit the part on it properly to start. Further, I can see the plunger in the hole to do the measurement. The tail of the vernier roughly measures about 1.5 to 1.6mm in depth. I measure the length of the slope to be about 2.5mm using a piece of steel wire and the nail of my thumb to mark the distance. But I'm not sure I'm measuring right.
Gene, I do not have a sine plate. Didn't get one as it seems rather complex to use.
Sunset, I use GWizard that has a trig calculator. I'll try the DTI method you mentioned later.
Update: I dug out the angle gauge and use the 2 pieces marked with 30 degree and 45 degree. It fits the one with 30 degree better than 45. So I think it might just be 60 a degree countersink though the result I get doesn't really look like the same on the sample piece. Think it may be easier to measure the dimensions off the machine it is supposed to be used on. I'll try to make time.
Regards,
Wong
Wongster
http://www.wongstersproduction.com
Proud to be a member of MetalworkingFun Forum since Mar 2012.
http://www.wongstersproduction.com
Proud to be a member of MetalworkingFun Forum since Mar 2012.