I need to engrave a Cliche (Printing Block / Stencil). I need to give that text 15 degree draft like i did on the logo. How can i do it?
I need to engrave a Cliche (Printing Block / Stencil). I need to give that text 15 degree draft like i did on the logo. How can i do it?
Hello,
A bit of a pain, but you can chamfer the top edge of the letters:
But at 15° you'll need wide lettering.
The above is 2°.
Kevin
i'll ask the obvious question.....
why do you need to draft the text? how deep is the text engraved into the part?
we rarely draft text because it's usually so shallow in the mold that we know it isn't going to stick. if it's on the cavity side of the tool, even if it wants to stick just a bit the toolmaker can add features to the core side so it sticks there and still releases properly.
if you have to do it, yeah, it can be a pain as some fonts are harder than others and you may have to model each letter individually.
Michael Paul wrote:
. . . yeah, it can be a pain as some fonts are harder than others and you may have to model each letter individually.
Quite right.
Bora,.. you will need to manually work through each... laborious but the only way unfortunately.. I'd do each letter face to understand their limits and adjust as you go.. (image/file attached)
Dear Rob, Kevin, Michael, Dwight, Paul,
Thank you all for your help and interest on my topic.
I have done it somehow.
First i show end result: 
This is my first time trying to engrave a cliche. (and also drafting a text)
Rob Edwards wrote:
From my experience of fonts some are better than others.
I'd try reducing the draft and depth until you get it to work, then see how far it will go.
Even try one letter at a time to see what is causing the problem.
My experience is the same with Rob but unfortunately word "GURGEN" had to be written in Times New Roman. So, that was the most problematic word. I have managed to draft it at 6 degrees and others at 12 degrees.
Michael Paul wrote:
1) why do you need to draft the text? 2) how deep is the text engraved into the part?
1) The reason i need 15 degrees draft, to engrave texts cliche makers use 10 to 15 degrees of engraving bits and we grind/sharpen our own bits. Grinding/sharpening less than 15 degrees makes the tool much less durable on the tip.
I will try to engrave with angled bit without drafting on CAD. Maybe it will be easier that way but we tried to do this right way in the beginning.
2) We tried 2.5 mms of depth at first but ended up with 1 mm of depth. The sample cliches we gathered all had 2 to 3 mms of depth with at least 15 degrees of draft. Reason we need more than 1 mm is that we will emboss it to leather. Sometimes you need at least 1.5 mms of depth to successfully emboss on different thicknesses of leather.
The end result showed us that we need more than 1 mm on thinner leathers (then in the photo). So next thing to try will be engraving with angled bits without draft on CAD. I am curious how good result i will have that way. It may give better results on thin leathers.
Kevin Chandler wrote:
But at 15° you'll need wide lettering.
Because i will use this to emboss on the leather i must draft outwards. So i musn't lose any thickness on the letter. Thank you so much for your effort anyways.
Paul Salvador wrote:
I'd do each letter face to understand their limits and adjust as you go..
Thank you for your file. It gave me an idea. I didn't try to make it a surface than extruding it. It may give some flexibility on draft.
Again, thank you all for your help.
I have put a video and SLDPRT of my end result. You can inspect them if you want.
Bora Guergen wrote:
Man, and I thought my sewn-edge belts were actually sewn. Now that I look at the one I'm wearing, I should have wondered how they made the thread black on one side and brown on the other.
What's the process? Heat? Time? Pressure?
Thanks
Dwight
Haha
Dwight Livingston wrote:
What's the process? Heat? Time? Pressure?
All of them
Not to interject, but I believe on industrial sewing machines you have the thread that comes from the top through the needle, and a thread under the sewing platform that "stitches" the top thread to the garment. You could very easily have black thread on one side and brown on the other.
Tyler
Yes, that sounds right. I should not have jumped to that.
Thanks
Dwight
Sorry your file is a future version so I cant see it.
I'm presuming you've done this but it's not working
From my experience of fonts some are better than others.
I'd try reducing the draft and depth until you get it to work, then see how far it will go.
Even try one letter at a time to see what is causing the problem.
If it doesn't work is another font acceptable?
For our company logo I have had to manually sketch the letters to get draft working
edit
Here I dissolved sketch text on the letter J
no wonder it doesn't work nicely