Building one of these is well within reach if you have used a drill and can cut a straight line. The hard part is not the woodwork. It is resisting the urge to design it around how it looks in photos.
My first attempt was genuinely handsome and completely unusable. I set the arm angle by eye because it looked right, and anyone under about five foot eight could not reach the top cuffs without going on tiptoe. I took it apart the same evening. Measure a body first, then cut. Everything below assumes you do that.
Before you buy a single length of timber. Stand the person who will actually use this against a wall. Mark where their wrists sit with arms raised comfortably, not stretched. Mark where their ankles sit at a relaxed stance. Those two marks are your plan. Every dimension below flexes around them.
What Is a St. Andrew's Cross?
An X shaped frame with four attachment points, one at the end of each arm, usually with a padded panel where the arms meet. The person stands or leans against it and the frame holds their weight and position instead of their own muscles doing it.
That is the whole idea, and it is why the geometry matters more than the finish. A cross that looks incredible and puts arms above shoulder height is worse than a plain one set at the right angle.
Materials and Lumber Selection
You want straight, dry, and knot free where the joints land. A knot sitting on a bolt hole is a crack waiting for the least convenient possible moment.
| Part | Quantity | What to look for |
|---|---|---|
| Arms | 2 long lengths | Nominal two by six or heavier. Sight down each one for bow before you buy it, because a curved arm cannot be corrected later. |
| Spine | 1 length | Same stock. This carries the load down into the base and takes the most abuse. |
| Base | 2 lengths plus feet | Deeper than feels necessary, front and back. Load on a cross is almost never straight down. |
| Padding | 1 panel | Closed cell foam with a wipeable cover. Open cell absorbs everything and cannot be cleaned. |
| Softwood offcuts | Not this | Cheap pine at minimum thickness flexes under sideways load. You will feel it move and you will stop trusting it. |
Basic Build Plans and Dimensions
Set these against the body you measured. The numbers below are starting points for an average adult, not gospel.
| Dimension | Starting point | How to adjust |
|---|---|---|
| Overall height | Roughly a door height | Top cuffs must be reachable flat footed. Tiptoe looks dramatic for ninety seconds and then it is a calf workout. |
| Arm angle from vertical | Around 30 to 40 degrees | Wider spread is more dramatic and less comfortable. Narrow it for longer sessions. |
| Arm crossing point | Around upper back height | This sets where the padded panel lands. Too high and the head has nowhere to go. |
| Base depth | At least a third of the height | Increase it if the frame is not fixed to a wall. Shallow bases tip. |
| Padded panel | Chest to hip coverage | Wider is kinder. This is the only part in constant contact. |
Hardware and Attachment Points
| Check | What good looks like | Why |
|---|---|---|
| Joints | Bolted through with washers both sides | Screws driven into end grain pull out under sideways load, which is exactly the load this frame gets. |
| Attachment points | Rated eye bolts through the timber, not into it | Anything that only bites into the surface is holding on with threads and optimism. |
| Upper points | Below shoulder height when standing | The single most common home build mistake, and no amount of padding fixes bad geometry. |
| Base fixing | Wall anchored, or a base deep enough not to need it | Pick one. Freestanding and shallow is the combination that tips. |
| Edges | Rounded and sanded everywhere skin lands | A sharp arris finds the inside of an arm within about a minute. |
Safety Minimums You Cannot Skip
The one test that matters. When it is built, have someone pull hard sideways on a single upper attachment point. Not downward with both arms, sideways with one. Downward load is what every frame survives. Sideways is what finds the joint you rushed. If anything creaks, moves or opens up, it is not finished.
Beyond that: quick release on every restraint, scissors within reach of the person who is not restrained, and never leave someone on it alone, not even to answer the door. None of this is exciting advice and all of it is the difference between a good evening and an ambulance.
DIY vs. Buying Ready-Made
Here is the honest version, having done both. Building one is satisfying and that is a real reason to do it. But there are two things a home build almost never gets right, and both of them are the things you notice a year in.
| Building it | Buying it | |
|---|---|---|
| Adjustability | Whatever you cut is what you have, forever | Arms move. This matters more than anyone expects the moment two different bodies use it. |
| Storage | Usually permanent. It lives in the room and it is the thing guests look at. | Comes apart. The difference between equipment and a conversation you did not want. |
| Load path | Only as good as your worst joint | Engineered and bolted for sideways load, which is the failure mode home builds miss |
| Time | A weekend if it goes well, two if it does not | An evening of assembly |
| Satisfaction | Considerable, and genuinely worth something | None whatsoever, which is the honest trade |
X-POSITION
Iron frame with bolted joints, adjustable arm height and angle, padded centre panel, four attachment zones.
Built and tested for the sideways pull described above, and it comes apart for storage rather than living in the room permanently.
See the X-POSITION
Still weighing up the shape
Crosses, benches, cages and frames side by side, with what each one is actually good at.
Once it is standing, whichever route you took, the St Andrews cross positions guide covers what to do with each attachment point and how to adjust when the two of you are different heights.
Frequently Asked Questions
What wood is best for a DIY St. Andrew's Cross?
Oak or hard maple are the best choices for a DIY build. Both are dense enough to handle dynamic loads without flexing or splitting over time. Red oak is widely available and cost-effective. If budget is a constraint, select-grade Douglas fir works for the main frame if you increase the cross-section dimensions, use 2"×6" members rather than 2"×4".
How much weight does a St. Andrew's Cross need to hold?
The structural members need to handle static body weight plus dynamic loads from movement and pulling against restraints. Design for at least 2× the weight of the heaviest user, so if the heaviest user is 200 lbs (91 kg), design and test the structure for 400 lbs (181 kg) minimum. The attachment hardware should be rated even higher, 500 lbs per point minimum.
How do I attach wrist and ankle cuffs to the cross?
The most reliable method is welded steel D-rings or O-rings with a documented load rating (minimum 500 lbs each), attached with 3/8" through-bolts and 2"+ backing plates on the reverse side. The backing plate distributes the load across a larger wood area. Never attach restraint hardware with screws alone, they will pull out under dynamic load.
Does a St. Andrew's Cross need to be anchored to the wall or floor?
Yes, during use it should be anchored. An unanchored cross can tip if a restrained person pulls hard sideways against a wrist attachment. Floor anchors with removable pins are the most common solution, they let you anchor during use and remove for storage. Wall tie-backs (a cable or chain attached to an eye bolt in a stud) are also effective.
How long does it take to build a St. Andrew's Cross?
For an experienced woodworker with proper tools, a full build with finishing takes 2, 3 weekends. For someone newer to woodworking, budget 4, 6 weekends to allow for careful measurement, proper joinery, and multiple finishing coats with dry time between coats. Rushing the structural elements is where DIY builds go wrong, take your time on the center joint and base assembly.
