diff --git a/sd_meh/merge_methods.py b/sd_meh/merge_methods.py
index c10c459..1546833 100644
--- a/sd_meh/merge_methods.py
+++ b/sd_meh/merge_methods.py
@@ -17,6 +17,7 @@
     "similarity_add_difference",
     "distribution_crossover",
     "ties_add_difference",
+    "add_perpendicular",
 ]
 
 
@@ -209,3 +210,16 @@ def filter_top_k(a: Tensor, k: float):
     k_value, _ = torch.kthvalue(torch.abs(a.flatten()).float(), k)
     top_k_filter = (torch.abs(a) >= k_value).float()
     return a * top_k_filter
+
+
+def add_perpendicular(
+    a: Tensor, b: Tensor, alpha: float, c: Tensor = None, **kwargs
+) -> Tensor:
+    a_diff = a.float() - c.float()
+    b_diff = b.float() - c.float()
+    a_ortho = a_diff * (a_diff / torch.linalg.norm(a_diff) * (b_diff / torch.linalg.norm(a_diff))).sum()
+    b_perp = b_diff - a_ortho
+    res = a + alpha * b_perp
+    if torch.isnan(res).any():
+        return a
+    return res.to(a.dtype)