diff --git a/notes.md b/notes.md
index 2d5c884d..6b32d592 100644
--- a/notes.md
+++ b/notes.md
@@ -63,6 +63,7 @@
 
 * `B` outside cutting direction in roughing mode inverted
 * `B` clear voids has double interior pass because wrong offset shadow used
+* `B` top clearing operations should use linear, not offset, passes
 * `F` flat and volumetric rendering of paths
 * `F` z bounded slices (extension of z bottom offset feature)
 * `F` z planar settings visualizations
diff --git a/src/kiri/main.js b/src/kiri/main.js
index 737dd608..af54ca29 100644
--- a/src/kiri/main.js
+++ b/src/kiri/main.js
@@ -1985,7 +1985,8 @@
         viewMode = mode;
         platform.deselect();
         updateSelectedInfo();
-        // updateStockVisibility();
+        // disable clear in non-arrange modes
+        $('view-clear').style.display = mode === VIEWS.ARRANGE ? '' : 'none';
         switch (mode) {
             case VIEWS.ARRANGE:
                 complete = {};
diff --git a/src/mode/cam/slice.js b/src/mode/cam/slice.js
index f7640e31..289dfb77 100644
--- a/src/mode/cam/slice.js
+++ b/src/mode/cam/slice.js
@@ -144,12 +144,16 @@
         thruHoles = tshadow.map(p => p.inner || []).flat();
 
         // create facing slices
-        if (procFacing) {
+        if (procFacing || proc.camRoughFlat) {
             let shadow = shadowTop.tops.clone();
             let inset = POLY.offset(shadow, (roughToolDiam / 4));
             let facing = POLY.offset(inset, -(roughToolDiam * proc.camRoughOver), { count: 999, flat: true });
             let zdiv = ztOff / roughDown;
             let zstep = (zdiv % 1 > 0) ? ztOff / (Math.floor(zdiv) + 1) : roughDown;
+            if (proc.camRoughFlat && ztOff === 0) {
+                // compensate for lack of z top offset in this scenario
+                ztOff = zstep;
+            }
             for (let z = zMax + ztOff - zstep; z >= zMax; z -= zstep) {
                 let slice = shadowTop.slice.clone(false);
                 slice.z = z;