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Engraving

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JasonB12/09/2019 20:09:32
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Posted by old mart on 11/09/2019 20:49:15:

The inserts have VCGT 1604 printed on the box, but I think the tip rads are much smaller.

It's the next bit of the code that dictates the tip radius, looks like it may be 01 eg 0.1mm radius

old mart12/09/2019 20:53:10
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You're right, Jason, it is indeed VCGT 160401, that is tiny. I tried them on the lathe, but with their tiny rads, I haven't found a use for them. I also have others with much bigger rads which are more versatile.

 My Carbide Depot insert designation chart doesn't list that "01". 

 

 

Edited By old mart on 12/09/2019 21:02:19

Neil Wyatt14/09/2019 18:19:18
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Posted by old mart on 11/09/2019 20:49:15:

As usual, the text which is written first, ends up stuffed in the middle of the photos which appear in the opposite order that they were added.

Move the cursor back to the end before adding each photo.

Neil

Ron Laden18/09/2019 07:46:10
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I took up Geoff,s offer (post above) to engrave the part on his CNC, he received it Saturday, machined it Sunday, posted it Monday and I received it back yesterday and it is excellent.

I hope I dont embarrass you Geoff but its another big thank you, very kind of you to do it for me, much appreciated.

dsc07070.jpg

Edited By Ron Laden on 18/09/2019 07:47:28

Edited By Ron Laden on 18/09/2019 08:09:19

Douglas Johnston18/09/2019 09:28:13
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That is very nice engraving, can I ask what was used to fill the engraving to produce the nice black lines.

Doug

Ron Laden18/09/2019 10:12:07
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Hi Doug,

I just used a large permanent black marker, let it dry and then wiped over it with ISO to clean off the surplus.

Ron

Edited By Ron Laden on 18/09/2019 10:13:37

Douglas Johnston18/09/2019 16:04:50
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Thanks for that Ron, nice and simple and seems to work well. I suppose if it rubs off after exposure to cutting oil etc after a while then a quick touch up will cure that.

Doug

Ron Laden18/09/2019 16:29:18
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Yes Doug, I think you can get proper ink for back filling but the permanent pen does ok and as you say its very easy to re-do should it need it. Some years ago I did an engraved scale with some Humbrol model paint and that lasted really well but it was more fiddly to do.

Edited By Ron Laden on 18/09/2019 16:29:56

old mart20/09/2019 13:31:28
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That cnc engraving is superb, professional quality. If the dial is steel, it might be possible to get a small pot of gun blue/black and then rub back the rest of the surface with some 800 wet and dry with oil. it would have to be extremely clean before blueing.

William Chitham20/09/2019 15:36:28
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I just refurbed a micrometer and used an Edding 950 paintmarker following a You Tube recommendation. I bought it from Zoro, they also do a Markal brand equivalent. They are meant for marking up fabrications, metal stock etc and will supposedly write on dirty rusty oily surfaces and be permanent. Easy enough to apply by the rub on wipe off method, only just done it so can't vouch for permanence.

Neil Wyatt20/09/2019 18:38:15
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Posted by Ron Laden on 18/09/2019 07:46:10:

I took up Geoff,s offer (post above) to engrave the part on his CNC, he received it Saturday, machined it Sunday, posted it Monday and I received it back yesterday and it is excellent.

I hope I dont embarrass you Geoff but its another big thank you, very kind of you to do it for me, much appreciated.

dsc07070.jpg

Edited By Ron Laden on 18/09/2019 07:47:28

Edited By Ron Laden on 18/09/2019 08:09:19

Very pretty, congratulations to Geoff.

Neil

Neil Wyatt20/09/2019 18:39:42
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Posted by old mart on 20/09/2019 13:31:28:

That cnc engraving is superb, professional quality. If the dial is steel, it might be possible to get a small pot of gun blue/black and then rub back the rest of the surface with some 800 wet and dry with oil. it would have to be extremely clean before blueing.

The traditional fill is hard wax or, one the shop floor, a rub with an oily, grubby thumb.

Neil

Derek Lane20/09/2019 22:03:22
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A little late but just watched this

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