diff --git a/edges.c b/edges.c
index 7e0ba49..9cbc5da 100644
--- a/edges.c
+++ b/edges.c
@@ -70,28 +70,36 @@ return 0;
  */
 static int is_edge_in_list(EdgeList *list, int p0, int p1)
 {
-int		idx;
+int		idx, retval, place;
+
+#if DEBUG_LEVEL
+fprintf(stderr, ">>> %s ( %p  %d %d )\n", __func__, list, p0, p1);
+#endif
+
+retval = 0;	place = -1;
 
 for (idx=0; idx < list->fidx; idx++) {
 	if (	(list->edges[idx].A == p0) &&
-		(list->edges[idx].B == p1) )		return 1;
+		(list->edges[idx].B == p1) ) {
+			retval = 1; place = idx; break; }
 
 	if (	(list->edges[idx].A == p1) &&
-		(list->edges[idx].B == p0) )		return 2;
+		(list->edges[idx].B == p0) ){
+			retval = 2; place = idx; break; }
 	}
 
-return 0;		/* NOT FOUND */
+if (retval) fprintf(stderr, "  edge %d %d found at %d\n", p0, p1, idx);
+
+return retval;
 }
 /* --------------------------------------------------------------------- */
 /*
- *
  *	we have two functions for adding an edge to a list
  *	the first one add unconditionnaly the edge to the
  *	(non full) list...
  */
 int push_an_edge(EdgeList *list, int p0, int p1)
 {
-
 #if DEBUG_LEVEL
 fprintf(stderr, ">>> %s ( %p  %d %d )\n", __func__, list, p0, p1);
 #endif
@@ -130,8 +138,12 @@ if (list->fidx >= list->size) {
 if ( ! is_edge_in_list(list, p0, p1) ) {
 	list->edges[list->fidx].A = p0;
 	list->edges[list->fidx].B = p1;
+	fprintf(stderr, "edge %d %d poked at %d\n", p0, p1, list->fidx);
 	list->fidx ++;
 	}
+else	{
+	fprintf(stderr, "    %s: drop edge %d %d\n", __func__, p0, p1);
+	}
 return 0;
 }
 /* --------------------------------------------------------------------- */
diff --git a/tools/.gitignore b/tools/.gitignore
index 0b7464b..f54b14c 100644
--- a/tools/.gitignore
+++ b/tools/.gitignore
@@ -6,7 +6,9 @@ export_evblob
 *.obj
 ! tools/minimal.obj
 ! tools/cube.obj
+! overflowed.obj
 read_obj
+
 *.xyz
 *.asc
 toto
diff --git a/tools/Makefile b/tools/Makefile
index 0d926db..12c3655 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -1,7 +1,7 @@
 
 BBFUNCS = ../libbubulles.a 
 
-OPT = -Wall -Wextra -g -DDEBUG_LEVEL=0 -DMUST_ABORT=0
+OPT = -Wall -Wextra -O1 -g -DDEBUG_LEVEL=0 -DMUST_ABORT=0
 
 all:	read_obj export_evblob			# essai_faces
 
diff --git a/tools/essai_faces.c b/tools/essai_faces.c
index 96322f9..f356ee6 100644
--- a/tools/essai_faces.c
+++ b/tools/essai_faces.c
@@ -32,6 +32,10 @@ printf(" ->  %d\n", bar);
 return 0;
 }
 
+/*
+ *		GO !
+ */
+
 int main(int argc, char *argv[])
 {
 int		foo, bar;
diff --git a/tools/export_evblob.c b/tools/export_evblob.c
index 7124e1d..18aacc6 100644
--- a/tools/export_evblob.c
+++ b/tools/export_evblob.c
@@ -88,7 +88,7 @@ fprintf(stderr, ">>> %s ( %p )\n", __func__, eav);
 if (verbosity) fprintf(stderr, "    fprinting %d edges\n", eav->Elist->fidx);
 
 vmax = eav->Blist->fidx;
-fprintf(stderr, "    in %s, vmax was %d\n", __func__, vmax);
+fprintf(stderr, "    %s: eav->Blist->fidx = %d\n", __func__, vmax);
 
 /*
  *	OK we have (maybe) all the data in da place
@@ -102,7 +102,7 @@ for (idx=0; idx<eav->Elist->fidx; idx++) {
 	/* this is a Molly-Guard */
 	if ( (a<0) || (b<0) || (a>vmax) || (b>vmax) ) {
 		fprintf(stderr, "ERROR: vmax=%d a=%d b=%d\n", vmax, a, b);
-		return -1;
+		continue;
 		}
 
 	printf("%.9f %.9f %.9f   %.9f %.9f %.9f\n",
@@ -167,6 +167,10 @@ if (foo) {
 	exit(1);
 	}
 
+/* deallocate used memory for keep pinpin happy */
+free_bubulles(eav.Blist, 1);
+free_edgelist(eav.Elist, 1);
+
 return 0;
 }
 /* --------------------------------------------------------------------- */
diff --git a/tools/importobj.c b/tools/importobj.c
index 2c1a952..f0e5ec3 100644
--- a/tools/importobj.c
+++ b/tools/importobj.c
@@ -104,15 +104,14 @@ return foo;
 /* new Mon 27 Mar 2023 12:08:18 AM CEST
  *
  *	mmmm... complex thing to do...
- *	and what is this "phy" parameter ?
  */
-static int parse_face(char *cptr)
+static int parse_face(char *cptr, int maxvert)
 {
 int		ix, foo, a, b;
-int		pts[3];
+int		pts[3], valid;
 
 #if DEBUG_LEVEL
-fprintf(stderr, ">>> %s ( '%s' )\n", __func__, cptr);
+fprintf(stderr, ">>> %s ( '%s'  %d )\n", __func__, cptr, maxvert);
 #endif
 
 #if (0)
@@ -136,36 +135,44 @@ for (ix=0; ix<3; ix++) {
 		}
 	}
 
-/** check the freshly read datas **/
+fprintf(stderr, "    %s:   pts %5d  %5d  %5d\n", __func__, 
+			pts[0], pts[1], pts[2]);
+
+valid = 1;
+
+/**** check the freshly read datas ****/
 if (  pts[0]==pts[1] || pts[0]==pts[2] || pts[2]==pts[1] ) {
 	fprintf(stderr, "%s: degenerated face ( %d %d %d )\n", __func__,
 				pts[0], pts[1], pts[2]);
 	dropped++;
+	valid = 0;
+	}
+if ( (pts[0]>maxvert) || (pts[1]>maxvert) || (pts[2]>maxvert) ) {
+	fprintf(stderr, "%s: out of bound ( %d %d %d )\n", __func__,
+				pts[0], pts[1], pts[2]);
+	valid = 0;
 	}
-
 /*
  *  may be we can check the "degenerated cylinder" here ?
  */
-
-for (ix=0; ix<3; ix++) {
-	a =  ix    % 3;
-	b = (ix+1) % 3;
+if (valid)	{
+	for (ix=0; ix<3; ix++) {
+		a =  ix    % 3;
+		b = (ix+1) % 3;
 #if PSYCHOTIK
-	foo = push_a_missing_edge(edges, pts[a], pts[b]);
+		foo = push_a_missing_edge(edges, pts[a], pts[b]);
 #else
-	foo = push_an_edge(edges, pts[a], pts[b]);
+		foo = push_an_edge(edges, pts[a], pts[b]);
 #endif
-	if (foo) {
-		fprintf(stderr, "%s: disaster #%d line %d\n",
-				__func__, foo, linenumber);
-		return -2;
+		if (foo) {
+			fprintf(stderr, "%s: disaster #%d line %d\n",
+					__func__, foo, linenumber);
+			return -2;
+			}
 		}
 	}
 
-if (dropped) {
-	fprintf(stderr, "%s: %d dropped...\n", __func__, dropped);
-	// exit(1);
-	}
+if (dropped) fprintf(stderr, "%s: %d dropped\n", __func__, dropped);
 
 #if DEBUG_LEVEL > 1
 fprintf(stderr, "<<< %s\n", __func__);
@@ -182,15 +189,17 @@ int try_to_read_an_OBJ_file(char *infname, char *ofname, int outstyle)
 FILE		*fpin;
 char		line[LINE_SZ+1], *cptr, *token;
 float		x, y, z;
-int		foo, tokenid;
+int		foo, bar, tokenid;
 Bubulle         bubulle;
-
 char		*outfname, *baseptr;
 
 #if DEBUG_LEVEL
-fprintf(stderr, ">>> %s ( '%s' '%s' %d )\n\n", __func__,
+fprintf(stderr, ">>> %s ( '%s'  '%s'  %d )\n", __func__,
 			infname, ofname, outstyle);
 #endif
+#if PSYCHOTIK
+fprintf(stderr, "    *** PSYCHOTIK MODE ENGAGED ***\n");
+#endif
 
 /* get memory for generated output filename(s) */
 if (NULL==(outfname=malloc(strlen(infname)+33)) ) {
@@ -218,7 +227,7 @@ if (NULL==edges) {
         }
 if (verbosity > 1)  print_edgelist_desc(edges, 0);
 
-fprintf(stderr, "\n  ***************************************\n");
+fprintf(stderr, "  +-----------------------------------------\n");
 
 while(NULL!=(cptr=fgets(line, LINE_SZ, fpin))) {
 
@@ -258,21 +267,27 @@ while(NULL!=(cptr=fgets(line, LINE_SZ, fpin))) {
 		case T_vertice:
 			x = y = z = 0.0;
 			foo = parse_vertice(cptr, &x, &y, &z);
-			if (3!=foo) {
+			if (3 != foo) {
+				fprintf(stderr, "err %d parse vertice %s\n",
+							foo, cptr);
 				abort();
 				}
 			bubulle.p.x = x;
 			bubulle.p.y = y;
 			bubulle.p.z = z;
-			if (verbosity > 1) niceprint_bubulle(&bubulle, 0);
+			if (verbosity > 2) niceprint_bubulle(&bubulle, 0);
 			foo = push_bubulle(bublist, &bubulle);
 			if (foo) {
+				fprintf(stderr, "err %d push bubulle\n", foo);
 				abort();
 				}
+			fprintf(stderr, "pushed %f %f %f (%d)\n", x, y, z,
+							bublist->fidx);
 			break;
 		case T_face:
 			/* experimental code here */
-			foo = parse_face(cptr);
+			bar = bublist->fidx - 1;
+			foo = parse_face(cptr, bar);
 			if (foo) {
 				 fprintf(stderr, "line %d '%s' parseface -> %d\n",
 							linenumber, cptr, foo);
@@ -298,10 +313,18 @@ while(NULL!=(cptr=fgets(line, LINE_SZ, fpin))) {
 			break;
 
 		case T_line:
+			cptr = strtok(NULL, " ");
+			fprintf(stderr, "\tLine:    %s\n", cptr);
 			break;
 		case T_smoothing:
+			cptr = strtok(NULL, " ");
+			if (verbosity)
+				fprintf(stderr, "\tSmoothing:    %s\n", cptr);
 			break;
 		case T_vt:
+			cptr = strtok(NULL, " ");
+			if (verbosity)
+				fprintf(stderr, "\tvt ??? :    %s\n", cptr);
 			break;
 			 
 		default:
@@ -312,11 +335,11 @@ while(NULL!=(cptr=fgets(line, LINE_SZ, fpin))) {
 
 fclose(fpin);
 
-fprintf(stderr, "  ***************************************\n");
+fprintf(stderr, "  +-----------------------------------------\n");
 
 if(verbosity) {
-	fprintf(stderr, "%s(): %9d vertices loaded\n", __func__, bublist->fidx);
-	fprintf(stderr, "%s(): %9d edges    loaded\n", __func__, edges->fidx);
+	fprintf(stderr, "%s: %d vertices and %d edges loaded.\n", __func__,
+				bublist->fidx, edges->fidx);
 	}
 
 if (verbosity > 1) {
@@ -355,6 +378,7 @@ else	{					/* one 'evblob' file */
 	}
 
 // Cleanup
+free(outfname);
 free_bubulles(bublist, 0);
 free_edgelist(edges, 0);
 
diff --git a/tools/minimal.obj b/tools/minimal.obj
index 29c3e9e..a3b6f29 100644
--- a/tools/minimal.obj
+++ b/tools/minimal.obj
@@ -1,7 +1,11 @@
 o minimal
+
 v 0 0 0
 v 1 0 0
-v 0 1 0
-v 0 0 1
-f 1/2 2/3 3/1
-f 0/1 0/1 0/2
+v 0 2 0
+v 0 0 3
+
+f 0 1 2
+f 1 2 3
+f 3 1 0
+f 0 2 3
diff --git a/tools/overflowed.obj b/tools/overflowed.obj
new file mode 100644
index 0000000..8ba547f
--- /dev/null
+++ b/tools/overflowed.obj
@@ -0,0 +1,11 @@
+o minimal
+
+v 0 0 0
+v 1 0 0
+v 0 2 0
+v 0 0 3
+
+f 0 1 2
+f 2 3 4
+f 4 2 1
+f 0 3 4
diff --git a/tools/rdwredges.c b/tools/rdwredges.c
index e4c4bb0..8c2e078 100644
--- a/tools/rdwredges.c
+++ b/tools/rdwredges.c
@@ -26,9 +26,13 @@ int		idx;
 unsigned char	*cptr = (unsigned char *)ptr;
 
 for (idx=0; idx<count; idx++) {
-	fprintf(stderr, "%02x", cptr[idx]);
+	fprintf(stderr, "%02x ", cptr[idx]);
 	}
-fprintf(stderr, " ?\n");
+fprintf(stderr, "    ?\n");
+for (idx=0; idx<count; idx++) {
+	fprintf(stderr, " %c ", isprint(cptr[idx]) ? cptr[idx] : 'X' );
+	}
+fprintf(stderr, "    ?\n");
 }
 /* --------------------------------------------------------------------- */
 /*			EXPERIMENTAL GRUIK-CODE !!!			 */
@@ -112,7 +116,7 @@ if (1 != foo) {
 	fprintf(stderr, "    %s of '%s': short read %d\n", __func__, filename, foo);
 	return -1;
 	}
-fprintf(stderr, "    %d vertices to be loaded\n", nbre);
+if (verbosity) fprintf(stderr, "    %d vertices to be loaded\n", nbre);
 
 /* allocate memory */
 blst = alloc_bubulles(filename, nbre, 0);
@@ -151,7 +155,7 @@ if (1 != foo) {
 	fprintf(stderr, "    %s of '%s': short read %d\n", __func__, filename, foo);
 	return -1;
 	}
-fprintf(stderr, "    %d edges to be loaded\n", nbre);
+if (verbosity) fprintf(stderr, "    %d edges to be loaded\n", nbre);
 
 /* allocate memory for edges list */
 elst = alloc_edgelist("krkrkr", nbre, 0);
diff --git a/tools/read_obj.c b/tools/read_obj.c
index c77c35d..74d3fee 100644
--- a/tools/read_obj.c
+++ b/tools/read_obj.c
@@ -17,11 +17,11 @@ int	verbosity = 0;
 /* --------------------------------------------------------------------- */
 void help(void)
 {
-printf("### READ_OBJ        0X%X TALKING\n", getpid());
+printf("### READ_OBJ       0X%X TALKING\n", getpid());
 puts("usage:");
-puts("\t-h\tthis help (use -v -h for more");
+puts("\t-h\t\tthis help (use -v -h for more");
 puts("\t-o fname\tfix the output filename");
-puts("\t-v\tincrease verbosity");
+puts("\t-v\t\tincrease verbosity");
 
 exit(0);
 }
@@ -32,7 +32,7 @@ int main(int argc, char *argv[])
 int		foo, opt;
 char		*ofname = NULL;
 
-fprintf(stderr, "\n### READ_OBJ       compiled %s at %s\n", __DATE__, __TIME__);
+fprintf(stderr, "### READ_OBJ       compiled %s at %s\n", __DATE__, __TIME__);
 
 if (1 == argc) {
 	bubulles_version(1);
@@ -55,10 +55,12 @@ while ((opt = getopt(argc, argv, "ho:v")) != -1) {
 	}
 
 if (optind < argc) {
-	if (verbosity) fprintf(stderr, "arg[%d] = %s\n", optind, argv[optind]);
+	if (verbosity) fprintf(stderr, "    arg[%d] = %s\n",
+					optind, argv[optind]);
 	foo = try_to_read_an_OBJ_file(argv[optind], ofname, 0);
 	if (foo) {
-		fprintf(stderr, "Error number %d on '%s'\n", foo, argv[optind]);
+		fprintf(stderr, "Error number %d on '%s'\n",
+						foo, argv[optind]);
 		exit(1);
 		}
 	}
diff --git a/tools/run_read_export.sh b/tools/run_read_export.sh
new file mode 100755
index 0000000..9203273
--- /dev/null
+++ b/tools/run_read_export.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+
+set -e
+
+make read_obj
+make export_evblob
+
+echo "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
+figlet 'a real WTF' | sed 's/^/XXX  /'
+echo "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
+
+./read_obj -v minimal.obj
+
+echo "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
+
+./export_evblob -t edges minimal.evblob		|
+	awk '{ printf "%4d  |  %.0f  %.0f  %.0f    %.0f  %.0f  %.0f\n", \
+			NR, $1, $2, $3,	$4, $5, $6 }'
+echo
+
+./export_evblob -t vertices minimal.evblob
+
+
diff --git a/tools/technique.md b/tools/technique.md
index c32942c..bb0acc0 100644
--- a/tools/technique.md
+++ b/tools/technique.md
@@ -1,9 +1,19 @@
 # Technique
 
+Les détails **gores**...
 
-# Tests
+## Le parser
 
-Pour le moment rien à part ce fichier vérolé :
+Je pense qu'il y a un bug sournois caché dedans
+
+## L'exporteur
+
+Conversion d'un `.evblob` en données tabulées exploitables par
+des scripts `awk`.
+
+## Tests
+
+Pour le moment rien, à part ce fichier .OBJ vérolé :
 
 ```
 o minimal
@@ -17,4 +27,11 @@ f 0 1 2
 f 2 3 4
 f 4 2 1
 f 0 3 4
-```
\ No newline at end of file
+```
+
+Ça va, vous avez capté le souci ?
+
+## Conclusion
+
+Rien ,'est simple, tout se complique...
+