This article contains a list of machining tooling vendors, as well as some commentary about my personal experience and impression of them. I decided to compile this because it is a bit difficult to find good budget-oriented options accessible Europe. While this list is not limited to vendors in, or near, the EU, it is heavily focused on that.

Europe

Knuth

Quality	High
Cost	Medium

High quality, and pretty good prices. I have bought a surface place and machine vise from them. The surface plate in particular was an excellent deal for the specifications.

Elmag

Quality	Medium-High
Cost	Medium-High

Decent quality, and reasonable prices. The sale/clearance section of the shop sometimes has good deals. I bought my milling machine from their clearance section, it was a demo unit, but was in decent shape. Together with the milling machine, I also bought an X axis motor from the sale/clearance section, which was an excellent deal, and a 4-jaw lathe chuck also from the sale/clearance section, which also was a pretty good deal.

cut-tools.eu

Quality	Medium
Cost	Medium-Low

Decent quality, and reasonable prices. I bought an endmill set and bunch of endmills and other cutting tools. So far, I am pretty happy with the quality.

CNCdrive

Quality	Medium
Cost	Medium-Low

Decent quality, and reasonable prices. I bought a bunch of ER20 chucks and a ER20 collet set. The chucks and collets seem to be of decent quality.

Vallder

Quality	Medium-Low
Cost	Medium-Low

Okay-ish quality, and reasonable prices. I bought an bunch of ER20 collets and endmills. The collets were not great, likely chinese imports, I would stay away from workholding on this vendor, but the endmills and cutting tools seem reasonable.

HC Maschinentechnik

Quality	Unknown
Cost	Medium-Low

This was recommend to me, but I haven't ordered from them yet, though the prices seem reasonable.

UK

Arc Euro Trade

Quality	Medium-High
Cost	Medium-Low

Decent quality, and pretty good prices. I bought a bunch of MT2 tool holders, a fly cutter, a coaxial indicator, and a couple endmills. I am really happy with the quality for the cost. Unfortunately, it is located in the UK, otherwise it would probably be my go-to vendor for machining tooling.

US

Tormach

Quality	High
Cost	Medium-High

High quality, and reasonable prices. I haven't personally ordered from them, but it has a really good reputation. If my machine had a MT3 spindle, I would probably be using their TTS system. For folks located in the US or Canada, it is a really good option.

China

Aliexpress

Quality	Low
Cost	Low

Low quality, and low prices. I would stay away from any tooling that requires good precision. While it may be possible to find decent-quality sellers, it's difficult and pretty much a gamble. For anything that doesn't need that much precision, it can be a great resource. I have bought a bunch of different things from Aliexpress, but the most relevant items here would be a small rotary table, a spring-loaded ER20 chuck for tapping, a large set of taps and dies, and a 25mm micrometer. The rotary table and the micrometer seem decent, the spring-loaded ER20 chuck isn't great, but since it's only for tapping, it's acceptable, and the tap and die set also seems decent, but I did a fair bit of research when selecting it to ensure it was of okay-ish-quality before buying.