Four combination machines by Grizzly's figures
| Machine | Width | Cutterhead | Jointer depth | Planer depth, full width | Supply as stated | Weight |
|---|---|---|---|---|---|---|
| Grizzly G0958 | 8 in | Helical, 18 inserts | 1/16 in (label: 1/8 in) | 3/64 in | 1-1/2 HP, 120 V, 15 A | 48 lb |
| Grizzly G0959 | 12 in | Helical, 28 inserts | 1/16 in (label: 1/8 in) | 3/64 in | 1-1/2 HP, 120 V, 15 A | 86 lb |
| Grizzly G0633 | 12 in | 3 HSS knives | 1/8 in | 1/8 in | 5 HP, 220 V, 1-phase, 25 A | 672 lb |
| Grizzly G0634 | 12 in | Spiral, 56 inserts | 1/8 in | 1/8 in | 5 HP, 220 V, 1-phase, 25 A | 672 lb |
Each figure is Grizzly's own. Not a ranking.
Matching a combination machine to the shop
| Shop | What suits it | Why, from the documents |
|---|---|---|
| Household outlet, carried or put away | A benchtop combination | G0958/G0959: 120 V, a 5-15 plug, 48 and 86 lb |
| Rough lumber in quantity | Deeper cuts per pass | G0633/G0634: 1/8 in full width against 3/64 in |
| Thick stock | A stated thickness capacity | G0633: 8 in; not stated in the G0958/G0959 specifications reviewed |
| Short parts | The shortest stated minimum | G0958/G0959: 6 in (8 in on the label); G0633: 12 in |
| Long boards | Longer jointer tables | G0633: 59-1/2 in; G0959: 42-3/8 in; G0958: 29-1/4 in |
Built from Grizzly's statements. Not a ranking.
What to compare
- Width. Jointing and planing share it, so a 12 in combination face-joints 12 in.
- Depth in each mode. The benchtop pair is rated for 1/16 in jointing and 3/64 in full-width planing; the floor pair for 1/8 in in both. Lighter cuts mean more passes.
- The changeover. Each switch of mode is made with the power off — guard, fence and dust port moved, tables raised or a housing fitted — as the combination jointer-planer guide describes.
- Supply. The G0633 needs a 220 V circuit with a 30 A breaker and comes without a plug; the G0958 plugs into a 120 V outlet on a 20 A circuit.
- Cutterhead. Knives or inserts; Grizzly says 'spiral' for one and 'helical' for the other. More in planer knives and inserts.
- Dust. Two 4 in ports on the G0633; 2-1/2 in on the G0958 and 4 in on the G0959.
Safety— Rules the manuals give
Change modes only with the power disconnected and fingers clear of the table pivots; put every guard back before jointing; respect the minimum length and thickness; feed with the grain; use push blocks for narrow or thin stock (Grizzly).
Before choosing a combination machine
- Widest board, and the depth per pass at that width
- The supply: 120 V outlet or a 220 V circuit
- Weight, and where it will stand
- How often you will change modes
- Shortest and longest parts against the minimum and the tables
Whether a combination machine, a planer alone or two machines suits the shop is in a jointer-planer vs a planer. Standalone machines are in choosing a jointer, choosing a benchtop jointer and choosing a thickness planer; the overview is the planer guide.
Sources
Specification-based: every figure is Grizzly's own, and the only combination machines reviewed are Grizzly's. The G0958/G0959 manual's specifications and machine label give different jointer depths and minimum lengths; both are shown, and the stricter applies. Grizzly calls the G0634's head 'spiral' and the G0958's 'helical', and each name is kept. No machine was tested and none is ranked.
- 1.
Model G0633/G0634 Jointer/Planer Combination Machine owner's manual (revised February 2018). Grizzly Industrial, 2018.
Used for: The G0633 (three high-speed steel knives, 15,102 cuts per minute) and G0634 ('spiral', 56 indexable cutters, 20,136 cuts per minute): 12 in in both modes; jointer 1/8 in deep, 59-1/2 × 14 in tables, a 39-3/8 in fence; planer 1/8 in full width and 5/32 in on a 6 in board, up to 8 in thick, 12 in minimum length, 22 ft per minute, 57 or 75 cuts per inch; 5 HP, 220 V single-phase, 25 A, a 30 A breaker, a 12-gauge cord with no plug; two 4 in dust ports; 672 lb; flip-up tables and a change lever for the changeover.
- 2.
Model G0958/G0959 8" & 12" Jointer/Planer with Helical Cutterhead owner's manual (for models manufactured since 03/23). Grizzly Industrial, 2023.
Used for: The G0958 (8 in, 18 inserts) and G0959 (12 in, 28 inserts), 'helical': 1-1/2 HP universal, 120 V, 15 A, a 5-15 plug, a 20 A circuit; 8,500 rpm, 17,000 cuts per minute, 64 cuts per inch, 22 ft per minute; jointer depth 1/16 in in the specifications and 1/8 in on the label, minimum length 6 in in the specifications and 8 in on the label, 1/4 in minimum thickness; planer 3/64 in full width, 1/16 in on a 6 in board; tables 29-1/4 in and 42-3/8 in; 2-1/2 and 4 in dust ports; 48 and 86 lb; a changeover that moves the dust housing over the cutterhead.
About this buying guide
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