Square Pegs Into Round Holes

[rgray]

Since there is little pressure involved in tool grinding/sharpening. I think you should cad up a collet and print the entire collet for your machine with a square hole in it.
Notice I didn't volunteer. I'm paying for Fusion 360 but I'm not good with it.

 

[gerritv]

I've settled on Cura as a slicer, but I'll check out Simplify!

Cura was ok for me but I can't stand the GUI. You get no overview of available settings at all. Plus with all the updates it is a constant 'try the new one with a test print and see what changed' cycle. I am not doing on-the-bleeding-edge printing, purely functional stuff.

 

[Boswell]

I use Cura and they do seem to update a lot. However, I skip some updates and often just take the defaults and been very happy. I will admit that I have no experience with any other brand of CAM for 3d printing to compare Cura with.

 

[Ulma Doctor]

I would love to see a video of you grinding them if possible.

Be careful what you wish for @savarin

 

[savarin]

Thanks Mike, informative for me as I have never seen one of those machines let alone one in action.

 

[Ulma Doctor]

i found a source for "Economy" square collets (E355/U2) for the Deckel SO/SOE

Economy Deckel Collets Inch Square - ARTCO - American Rotary Tools Company

Economy Deckel SO/SOE Square Collet Original Deckel quality parts for the models SO and SOE tool and cutter grinders. Made in Germany. American Rotary Tools Company carries a wide range of rotary tools including spindles, grinders, and polishers from NSK, Foredom, Boride, Dumore and more at low...

www.artcotools.com

BUT, for $80 each, i think i could print hundreds, if not thousands, of my collet bushings.

if i were to sharpen bits professionally, i would buy the new square collet- i can't justify the expense otherwise.

 

[gerritv]

You need to broaden your search a bit, its a big world Artco is a great supplier but they are the Deckel dealer as well so expect to pay more.

https://www.rcm-machines.com/en/355e-square has a large selection, if you combine then shipping isn't as painful. Also don't forget to take 17% VAT off the price.

 

[Ulma Doctor]

You need to broaden your search a bit, its a big world Artco is a great supplier but they are the Deckel dealer as well so expect to pay more.

https://www.rcm-machines.com/en/355e-square has a large selection, if you combine then shipping isn't as painful. Also don't forget to take 17% VAT off the price.

thanks for the info!

 

[Ulma Doctor]

I was just thinking that you gotta' tell us how they work!

here is an 8° front and top relieved 1/4" M42 HSS blank on duty against 303ss , in a Unimat SL1000

the grind performed very well, 1100rpm, DOC .008"(.2mm) {without support,around 6x the diameter )

the video was shot today, the date stamp is wrong

 

[Ulma Doctor]

Lovely work! I'll be doing similar on my forthcoming "broken milling vice conversion to tool grinder" project for use with ER32 collets. Probably put a little top hat brim on one end to stop the collar going right through the collet.

It seems weird having printed plastic stuff in a machine shop, but 3D printed parts absolutely have a place IMHO. You could spend hours making those collars in metal and not get better results than you do with the printed ones. Just takes a while to get your head around it and into the mindset. I've printed all sorts of arbors, adaptors, spacers and whatnot. My most ambitious (and very successful) project has been printing plates for my dividing head.

I've settled on Cura as a slicer, but I'll check out Simplify!

thanks for your kind words.
the printer has been a welcomed acquisition