diff --git a/Fonderie/essai.sh b/Fonderie/essai.sh
index 7bccafc3..36c163de 100755
--- a/Fonderie/essai.sh
+++ b/Fonderie/essai.sh
@@ -3,27 +3,29 @@
 
 
 # ------------------------------------------------------------
-liste_filtres ()
+essai_filtres ()
 {
-FILTRES="5:6:13 15 2:2 5:9:8 4:25 8:13:13:7 10:1 25:25:25:25 13:14:13"
+FILTRES=$(./t -L | awk 'NR>1 { print $1 }' | sort)
 
 rm /tmp/fstack*.png
 
+SRC=$(ls -rt1 $HOME/Essais/FondageDePlomb/capture/* | tail -1)
+
 for F in $FILTRES
 do
-
 	I="/tmp/fstack-"$F".png"
-	echo ; echo ==== $I
-	./t -F $F
-	txt=$(printf "[%-10s]" $F)
-	convert foo.png -pointsize 24 -kerning 0	\
+	echo ; echo ======== $I
+	./t -v -i $SRC -F $F -o foo.png
+	txt=$(printf "( %-10s )" $F)
+	convert foo.png -pointsize 48 -kerning 0	\
 		-fill Gray80 -undercolor Gray20		\
 		-font Courier-Bold			\
-		-annotate +0+23 "$txt"			\
+		-annotate +10+50 "$txt"			\
 		$I
-
 done
-convert -delay 100 /tmp/fstack*.png foo.gif
+
+echo ; echo "making gif89a..."
+convert -delay 200 /tmp/fstack*.png foo.gif
 }
 # ------------------------------------------------------------
 essai_single ()
@@ -46,6 +48,6 @@ ffmpeg	-nostdin				\
 # ------------------------------------------------------------
 #			MAIN
 
-essai_single
+essai_filtres
 
 # ------------------------------------------------------------
diff --git a/Fonderie/sfx.c b/Fonderie/sfx.c
index 1ee6e047..64c6c11e 100644
--- a/Fonderie/sfx.c
+++ b/Fonderie/sfx.c
@@ -20,6 +20,28 @@
  */
 extern	int		verbosity;
 
+/* -------------------------------------------------------------- */
+
+int incrustation_0(FloatImg *src, FloatImg *dst, int k)
+{
+int		x, y, x4, y4;
+float		rgb[3];
+
+#if DEBUG_LEVEL
+fprintf(stderr, ">>> %s ( %p %p %d )\n", __func__, src, dst, k);
+#endif
+
+x4 = dst->width / 4,	y4 = dst->height / 4;
+
+for (y=0; y<y4; y++) {
+	for (x=0; x<x4; x++) {
+		fimg_get_rgb(src, x*4, y*4, rgb);
+		fimg_put_rgb(dst, x+9, y+9, rgb);
+		}
+	}
+
+return -1;
+}
 /* -------------------------------------------------------------- */
 /* nouveau du premier dimanche de 2020 'nextgen'		*/
 static int pixel_trinitron(FloatImg *pimg, int pos[4], float *fvals)
@@ -27,7 +49,7 @@ static int pixel_trinitron(FloatImg *pimg, int pos[4], float *fvals)
 int		x, y, off;
 
 for (y=pos[1]; y<pos[1]+pos[3]; y++) {
-	for (x=pos[0]; x<pos[0]+pos[2]; x++) {
+	for (x=pos[0]+1; x<pos[0]+pos[2]-1; x++) {
 		off = (y*pimg->width) + x;
 		pimg->R[off] = fvals[0];
 		pimg->G[off] = fvals[1];
diff --git a/Fonderie/sfx.h b/Fonderie/sfx.h
index 62617c01..c70a1966 100644
--- a/Fonderie/sfx.h
+++ b/Fonderie/sfx.h
@@ -3,6 +3,9 @@
  *	---------------------------------------------------
  */
 
+int incrustation_0(FloatImg *src, FloatImg *dst, int k);
+
+
 int trinitron(FloatImg *pimg, int notused);
 
 int bouger_les_pixels(FloatImg *pimg, int kaboo);
diff --git a/Fonderie/single.c b/Fonderie/single.c
index e271537b..747d1021 100644
--- a/Fonderie/single.c
+++ b/Fonderie/single.c
@@ -81,48 +81,14 @@ nextpng++;
 return 0;
 }
 /* -------------------------------------------------------------- */
-/*
- *		test-only function !
- */
-int essayer_single(char *globpattern, char *destdir, int chain)
+int single_print_state(char *title, int k)
 {
-FloatImg	image;
-int		idx, foo;
+#if DEBUG_LEVEL
+fprintf(stderr, ">>> %s ( '%s' %d )\n", __func__, title, k);
+#endif
 
-fprintf(stderr, ">>> %s ( '%s' '%s' %d )\n", __func__,
-			globpattern, destdir, chain);
-
-foo = fimg_create(&image, 640, 480, 3);
-if (foo) {
-	fprintf(stderr, "erreur %d creation image\n", foo);
-	return foo;
-	}
-fimg_vdeg_a(&image, (double)3.141592654);
-
-foo = single_init(0, destdir, "none");
-if (foo) {
-	fprintf(stderr, "erreur %d single_init\n", foo);
-	return foo;
-	}
-
-filterstack_list(chain, "essai du single");
-
-for (idx=0; idx<666; idx++) {
-
-	foo = filterstack_run(chain, &image, 0);
-	if (foo) {
-		fprintf(stderr, "%s: filterstack run --> %d\n",
-				__func__,                 foo);
-		return foo;
-		}
-
-	foo = single_push_picture(&image);
-	if (foo) {
-		fprintf(stderr, "erreur %d push picture\n", foo);
-		return foo;
-		}
-
-	}
+fprintf(stderr, "nextpng     %d\n", nextpng);
+fprintf(stderr, "counter     %d\n", counter);
 
 return -1;
 }
diff --git a/Fonderie/single.h b/Fonderie/single.h
index 6536b69f..1372e4b4 100644
--- a/Fonderie/single.h
+++ b/Fonderie/single.h
@@ -2,7 +2,6 @@
 		SINGLE
 	experimental and/or testing code, do not use in
 	production.
-
 */
 
 /* -------------------------------------------------------------- */
@@ -10,12 +9,8 @@
 int single_init(int next, char *dest, char *sfxchain);
 int single_push_picture(FloatImg *pimg);
 
+int single_print_state(char *title, int k);
 
 /* -------------------------------------------------------------- */
-/*
- *		test function
- */
-int essayer_single(char *globpattern, char *destdir, int K);
-
 /* -------------------------------------------------------------- */
 
diff --git a/Fonderie/t.c b/Fonderie/t.c
index 3c27e6fb..0ba15d98 100644
--- a/Fonderie/t.c
+++ b/Fonderie/t.c
@@ -67,24 +67,90 @@ fimg_destroy(&image);
 return 0;
 }
 /* ----------------------------------------------------------- */
+/*
+ *		test-only function !
+
+foo = essayer_single("capture/???42.fimg", "/tmp/x8/", STK);
+fprintf(stderr, "essayer single -> %d\n", foo);
+
+
+ */
+int essayer_single(char *globpattern, char *destdir, int chain)
+{
+FloatImg	image;
+int		idx, foo;
+
+fprintf(stderr, ">>> %s ( '%s' '%s' %d )\n", __func__,
+			globpattern, destdir, chain);
+
+foo = fimg_create(&image, 640, 480, 3);
+if (foo) {
+	fprintf(stderr, "erreur %d creation image\n", foo);
+	return foo;
+	}
+fimg_vdeg_a(&image, (double)3.141592654);
+
+foo = single_init(0, destdir, "none");
+if (foo) {
+	fprintf(stderr, "erreur %d single_init\n", foo);
+	return foo;
+	}
+
+filterstack_list(chain, "essai du single");
+
+for (idx=0; idx<666; idx++) {
+
+	foo = filterstack_run(chain, &image, 0);
+	if (foo) {
+		fprintf(stderr, "%s: filterstack run --> %d\n",
+				__func__,                 foo);
+		return foo;
+		}
+
+	foo = single_push_picture(&image);
+	if (foo) {
+		fprintf(stderr, "erreur %d push picture\n", foo);
+		return foo;
+		}
+
+	}
+
+return -1;
+}
+/* ----------------------------------------------------------- */
+
 int help(void)
 {
 puts("yolo!");
 
+puts("\t-F\tdefine:the:filter:chain");
 puts("\t-L\tlist available filters");
+puts("\t-i\tinfile.fimg");
+puts("\t-o\tinfile.xxx");
+
 
 exit(0);
 }
 /* ----------------------------------------------------------- */
-void experiment(void)
+int experiment(void)
 {
 int		foo;
+FloatImg	image, dest;
 
 fprintf(stderr, "EXPERIMENT\n");
 
-foo = essayer_single("capture/???42.fimg", "/tmp/x8/", STK);
+foo = fimg_create_from_dump("01137.fimg", &image);
+if (foo) {
+	fprintf(stderr, "%s: err %d on create\n", __func__, foo);
+	return -1;
+	}
 
-fprintf(stderr, "essayer single -> %d\n", foo);
+foo = fimg_clone(&image, &dest, 1);
+foo = fimg_copy_data(&image, &dest);
+
+incrustation_0(&image, &dest, 0);
+
+fimg_export_picture(&dest, "foo.png", 0);
 
 exit(0);		/* back to real world */
 }
@@ -96,7 +162,7 @@ int		foo;
 int		opt, do_xper = 0;
 char		*filterchain = "0";
 char		*infile = "mire.fimg";
-char		*outfile = "out.png";
+char		*outfile = PNG;
 char		*outdir = "/tmp/x8/";
 
 fprintf(stderr, "*** %s : compiled by tTh, %s %s\n", __FILE__,
@@ -130,6 +196,7 @@ if (foo) {
 
 if (do_xper) {
 	experiment();
+	return 0;
 	}
 
 foo = essai_filterstack(infile, outfile);