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Member postings for martin olesen

Here is a list of all the postings martin olesen has made in our forums. Click on a thread name to jump to the thread.

Thread: Proxxon mf70 spindel/motor coupling?, any good idears?
23/11/2020 21:20:36

Hello All,

Thank you very much for the answers.
I think I will try to do what you suggest Howard, making a coupling where i dublicate the standard coupling.
The thing i that i do not like the Proxxon standard coupling that actually transfer the energy from motor to spindel via some plastic and rubber parts, but i may be forced to use this solution to get up running.
Thanks again for your kind help everybody.

22/11/2020 12:31:00


i am going to install a new spindel motor in my little Proxxon mf70 mill, instead of the excisting Proxxon motor, since i think it makes too much noise.

With regards to the coubling between the motor axel and the spindel, are there somebody that has a good idear how that could be made, it is very difficult to get a screwdriver sideways down in the motor housing, and i do not like the plastic/rubber solution Proxxon have done?

Anyone have a smart motor/spindel solution for the Proxxon mf70?



Thread: What collet chuck dimentions for s Sieg SX2?
21/11/2020 15:49:59

Hi Ketan,

Thank you for your very informative text.

I will for sure buy from the official Danish rep, Globaltools, their prices are ok, and then i have service and support close to.



21/11/2020 14:40:44

Stuart an Journeyman, great, i will for sure look at what you suggest.

I actuallly do know what i want, i want a hobby mill for lighter milling in alluminium that i maybe can later on convert into a cnc machine.

Right now i have a small Proxxon MF70 mill, that i have converted into cnc, running Estelcam, using Onshape CAD, but i wanta larger mill to be able to mill nicely in alluminium.

I will most proberly want to buy the Sieg X2 from the danish dealer,, but my reason for asking the spindel thing was that i planned to buy the collets and collet chuk from ea Banggood in advance, as a full set an save some bucks, because i will first buy the machine later.



21/11/2020 11:10:35

Hello all,

Again thanks to all answers, also to the one that feel unnecessary sarcasm and irony helps to transfer knowlege!



21/11/2020 10:24:51


ok, thank you very much.



21/11/2020 10:07:46

Hello Martin and all,

Thank you so much for taking your time to write so much goos information to me, it is really helpfull.

I know i am a bit slow.., but one last question, if i choose for example to buy a Sieg x2 super (i can get i for around 1000 EUR here in denmark) will it then automatecially come with a MT3 spindle fit (sorry for my wrong wording), or do Sieg X2 mills comes with different fit for collet chucks depending of country, and maybe dealer?

in other words, if i just look for MT3 collet chuks, will i then be sure i fit the Sieg X2 super i want to buy?

Again, thank you very much for all your help.



21/11/2020 08:48:40

Hello all,

First of all, thank you very much for taking your time to guide me in this, very much apriciated.

I am new to this, and what confuses me is all the different abberviations used in the world of cnc, and milling chucks.

MT3, r8, ER25, and there a explanation on all these somewhere do you think, what they mean, and also......some collets are measured in inc other in mm, is there converter adabters from inch collets to mm collets?

By the way, i live in Denmark.

again, thank you very much for your help.



17/11/2020 22:19:38


I plan to buy a Sieg SX2 mill, but normally i comes with a drill chuck, and it is not good for milling, i heard

Therefore i would like to buy a Collet chuck instead, with a selection of collets, ea 4 mm to 12 mm, or something like that.

In the meantime i am in doubt over all the different numbers used to specify dimentions on the chucks, so it fit the spindle on the Sieg SX2.

Therefore, can anyone tell me what collet type (dimentions, numbers, ect) i shall look for so it will fit the spindle in the SX2?

Also, have anybody recomendations to a good set with such a Sieg SX2 compatible collec chuck, with a selection of chucks, from ea Banggood, or Aliexpress......or shall i not buy such tool there.....on the other hand, this is only for hobby use, and i am a beginner....?
Thanks for all advices.

Thread: Making my new mechanics hobbyroom.
17/11/2020 22:11:44

Hi All,
I always liked to do electronics, but also mechanics, and now i got a 3D printer and a small Proxxon MF70 cnc mill, which i bought to learn about the world of metal (alluminium) processing.
I use Onhape CAD for most of my work, great program.

Lately i really would like to get a more powerfull manuel mill, i think i will get a Sieg SX 2 super.

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