Quick take
Choosing a workholding fixture usually comes down to what you are holding and how much repeatability you need. The four pieces here span from a set of brass edge clamps to a System 3R EDM holder block. Between them are a used Mecatool steel rectangular fixture block and a new Raptor stainless dovetail fixture. The right pick depends less on budget alone and more on whether you need a dedicated EDM tooling block, a steel block for wire EDM work, a stainless dovetail for small parts, or simple low-profile clamps for edge work.
Listed-price comparison
| Product | Listed price | Price bar |
|---|---|---|
| System 3R EDM Holder Fixture Tooling Block | USD 1,750.00 | |
| Mecatool Steel Rectangular Fixture Block, MPN C 597250 | USD 275.00 | |
| Raptor RWP-019SS Dovetail Workholding Fixture Stainless .375 | USD 407.96 | |
| 5 Pack Workholding Fixture Clamps (5/16\"-18 Stud) 13/16\" Brass Hex 10201 | USD 19.95 |
Decision matrix
| If you need... | Better fit | Why |
|---|---|---|
| A dedicated EDM electrode or workpiece holder | System 3R EDM Holder Fixture Tooling Block | Designed to hold and position a workpiece during machining |
| A steel block for wire EDM or general fixturing | Mecatool Steel Rectangular Fixture Block | Rectangular steel block with a history of use on an Agie wire EDM |
| A new stainless dovetail fixture for repeatable part location | Raptor RWP-019SS Dovetail Workholding Fixture Stainless .375 | New stainless dovetail fixture with a stated dovetail width |
| A low-cost way to hold edges on smaller parts | 5 Pack Workholding Fixture Clamps | Brass hex clamps with a stud arrangement for edge work |
Product notes
System 3R EDM Holder Fixture Tooling Block
The System 3R EDM Holder Fixture Tooling Block is the most expensive workholding option here at $1,750. It is a dedicated EDM holder from the System 3R brand, designed to hold and position a workpiece during machining. Condition is used. Choose it if you need a tooling block built around the System 3R platform. The limitation is the price point and the used condition: if your work does not involve EDM workholding or repeatable electrode setups, this block is more capability than you need.
Mecatool Steel Rectangular Fixture Block, MPN C 597250
The Mecatool Steel Rectangular Fixture Block, MPN C 597250, is a used steel block priced at $275. It has a rectangular shape and was used on an Agie wire EDM. That makes it a plausible candidate for shops that already work with EDM or need a steel fixture block. The MPN is stated in the title, so you have a reference number. The limitation is the used condition: you are buying a block with prior machining service. For a simple rectangular steel block, it fits that role directly.
Raptor RWP-019SS Dovetail Workholding Fixture Stainless .375
The Raptor RWP-019SS Dovetail Workholding Fixture is a new stainless dovetail fixture at $407.96. It specifies a .375\" dovetail width and dimensions of 2.50 x 1.00 x 1.25. The stainless construction is a clear differentiator. The main limitation is the fixed .375\" dovetail size: it is not a universal clamp or block, so it works only for parts that fit that dovetail width. The new condition is a plus.
5 Pack Workholding Fixture Clamps (5/16\"-18 Stud) 13/16\" Brass Hex 10201
The five-pack of brass hex clamps, part 10201, is the low-cost option at $19.95. Each clamp uses a 5/16\"-18 stud, a 13/16\" brass hex, a 5/32\" hex socket, and a clamp height of .20\". It is a low-profile eccentric cam edge clamp, and the pack includes five clamps. That makes it a useful starter set for edge clamping on smaller parts. The limitation is the compact size: the brass hex is only 13/16\" and the stud is 5/16\"-18, so it suits edge clamping rather than large block work.
Final recommendation by use case
- For a dedicated EDM holder block: the System 3R EDM Holder Fixture Tooling Block is the match if you need a tooling block that positions work during EDM machining.
- For a steel rectangular block: the Mecatool Steel Rectangular Fixture Block gives you a used steel block with a stated MPN.
- For a new stainless dovetail fixture: the Raptor RWP-019SS is the one to pick if you need a dovetail fixture in stainless.
- For a low-cost edge clamp solution: the brass hex clamp pack is the easy entry point for edge clamping on smaller parts.
