I imagine most people already have an idea of what they need to complete a project but I thought I would post what I consider a basic set of tools in order to make "a part", although obviously "a part" is too vague..
The most important items you will end up having will be measuring equipment. Personally, I suggest the following for basic milling:
6" or 8" (or both) digital calipers - Mitutoyo or Starrett if at all possible. Once you try the good ones you will never go back.
Test indicator - Highest quality you can afford
Multiple dial indicators in your preferred units - Again, highest quality possible.
Micrometer set - 0 - 6" should do most work that you will need.
Machinist squares - Cheap is ok in this instance, until you really need the precision.
Machinist protractor and rules - Vital for angles
A machinist level - You have to start level to end level.
Setup:
A clamping set for your t-slots.
1-2-3 and 2-4-6 block sets
Parallel sets
V blocks for holding round parts
Transfer punches - A cheap set will do in most instances.
Sine plate or trunion table.
If you get a sine plate, gauges and machinist jacks.
A good milling vise, and a few tooling vises.
Edge finder
Full set of collets
Tooling, etc.
Decent drill index - These get expensive, but they're worth it..
Decent tap set - I have a few, my go to in the junk mastercraft set but it has most pieces and when I break a tap, I buy a good one. Keep in mind that nearly all sets are tapered taps, not bottoming taps. You need bottoming taps for blind holes.
Full endmill set
Boring head(s) and boring bars
Slitting saw and arbor.
Deburring tool
Emery cloth
Fluids:
Rapid-tap
Coolant
Machinist bluing
This is just suggestions, and not cheap.. it takes a lot of tools to make a "part" though. For more complex or precise parts you will need a lot more tooling.
The most important items you will end up having will be measuring equipment. Personally, I suggest the following for basic milling:
6" or 8" (or both) digital calipers - Mitutoyo or Starrett if at all possible. Once you try the good ones you will never go back.
Test indicator - Highest quality you can afford
Multiple dial indicators in your preferred units - Again, highest quality possible.
Micrometer set - 0 - 6" should do most work that you will need.
Machinist squares - Cheap is ok in this instance, until you really need the precision.
Machinist protractor and rules - Vital for angles
A machinist level - You have to start level to end level.
Setup:
A clamping set for your t-slots.
1-2-3 and 2-4-6 block sets
Parallel sets
V blocks for holding round parts
Transfer punches - A cheap set will do in most instances.
Sine plate or trunion table.
If you get a sine plate, gauges and machinist jacks.
A good milling vise, and a few tooling vises.
Edge finder
Full set of collets
Tooling, etc.
Decent drill index - These get expensive, but they're worth it..
Decent tap set - I have a few, my go to in the junk mastercraft set but it has most pieces and when I break a tap, I buy a good one. Keep in mind that nearly all sets are tapered taps, not bottoming taps. You need bottoming taps for blind holes.
Full endmill set
Boring head(s) and boring bars
Slitting saw and arbor.
Deburring tool
Emery cloth
Fluids:
Rapid-tap
Coolant
Machinist bluing
This is just suggestions, and not cheap.. it takes a lot of tools to make a "part" though. For more complex or precise parts you will need a lot more tooling.