The short, double-wide 3.5″ × 4″ riser keeps its footprint stubby so your fixtures can crowd right up to inside corners — full 2″ of grid travel, almost 3″ of reclaimed space behind the block.
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DOUBLE ROW RISER 3.5"
Why double row instead of single row?
On a single-row block the two locating pins run in line with the table grid, so the tooth block has to be long. On the Double Row system the pins sit side by side — you keep the same 2" of grid movement, but the block stays short. That buys you almost 3" of clearance behind the block.
Single row — pins in line, long block, holes covered
Double row — pins side by side, short block, outboard row open
Inside corners: short blocks let fixtures sit much closer together — and fit small tables
Long blocks have to sit much further apart before they interfere
Modular by design
The riser and the tooth block chassis are separate pieces. The riser slips onto the 5" Double Row Short Tooth Block to create a rigid 90° fixture and fastens from the bottom. Swap riser heights on the same chassis as the job changes.
What are the two extra holes next to the 3/4" holes?
Mount a smaller riser to the taller Double Row riser, the 3.5" block becomes a second working plane — the affordable way to extend a setup you’ve already built around the 13" riser. The 2 auxiliary holes let you mount and lock the blocks into a stable position with the help of included thumb screws.
What you can do with it
Square AND vertical at once
Hold a tube vertical at an exact offset while a fence block keeps it square to the table — even when the part is off-grid. A single-row block covers those holes; this one leaves them open.
Repeatable offset stops
Run a fence block against the open outboard row, add a magnetic shim, and hit an exact distance off the riser face — a clickable, repeatable stop for off-grid parts.
Stack setups up the face
The Short Adjustable Tooth Block drops into the face holes with a thick and a thin offset — flip it around to fine-tune, then clamp anywhere up the riser.
Clamp from the extra row
The unique inner web lets you cradle round pipes like a heavy-duty V-block. You can easily clamp tubing down for flawless perpendicular welds.
Down pressure with Double Dragon
Drop the Double Dragon clamp in a hole and it pushes backward and down at the same time — squeeze as hard as you want.
Risers on risers
Two auxiliary holes next to the 3/4" hole let you mount a second riser as a shelf — off the front or the back.
Side-hole fencing
The row of holes down the side accepts Three-Axis Square Pins. Drop them in and you have an instant fence.
Works like a Fireball square
Add the same tabs used on Fireball squares, shim as needed (an 1/8" shim squares it to the corner), and hold material perpendicular — mechanical or pure magnetic.
Pro tip: fixture round stock with ball bearings
Every hole on this riser is precision drilled and chamfered — exact spacing, exact seating. That means precision ball bearings nest perfectly in them and act as instant V-blocks. Set bearings in both rows of the double-wide face, cradle your round tube or bar against them, add a clamp, and TIG weld all the way around it.
Because the whole setup rides on the fixture system, you can pick it up and move it — a portable workstation for round parts. Bearings are precision-round and exactly to size, so they pull double duty as shims, spacers, and height gauges too.
What Is Dragon Scale Coating?
Superior Anti-Spatter Properties
Improved Corrosion Resistance
Enhanced Wear Resistance
Steel vs Dragon Scale Coating
Nitride vs Dragon Scale Coating
Full Video (Dragon Scale Demo)
What makes the 3/4" Hole System Superior to 16mm and 5/8"
45% larger hole cross section while still allowing 2” spacing on table and 1” spacing on accessories.
3/4" System
5/8" & 16mm System
What makes the 3/4” Hole System Superior to 28mm
2” hole spacing on tables vs 4” hole spacing.
- 92% more holes
3/4" System
25 Holes Per 12"x12" Section
28mm System
13 Holes Per 12"x12" Section