concaves

im about to start shaping my first board,and i was just wodering if anyone could give give me some pointers on putting in concaves… should i use sandpaper, rasp??? ive been practicing on an old snapped board… i was also wondering about if there were any websites with step by step sorta guides

im about to start shaping my first board,and i was just wodering if anyone > could give give me some pointers on putting in concaves… should i use > sandpaper, rasp??? ive been practicing on an old snapped board… i was > also wondering about if there were any websites with step by step sorta > guides The best way to start is watch a friend who’s been doing it for a couple of years first. I finish the board then use a templete of a concave i like for that board and draw a light line,then tape that off. I take the stringer down with a hand plane a little at a time while useing a hard block. Sand with even stroke’s toward the center on each side tell you get it to where you want it,then fine sand it with a soft block,all the time takeing the stringer down till it’s even.Then pull the tape and fine sand the edge a little.Vola.As Gerry once said,IT’S A CAKEWALK.

I’ve used a hard rubber disc sander - works pretty good on the stringer. Template and tape as mentioned above. Still requires a little finishing by hand. Also works for dual concaves through the tail or scooping out the deck. Have heard of rolling pins wrapped in sandpaper with a metal shaft screwed in the end and put in a drill for bonzer style concaves.

I’ve used a hard rubber disc sander - works pretty good on the stringer. > Template and tape as mentioned above. Still requires a little finishing by > hand. Also works for dual concaves through the tail or scooping out the > deck. Have heard of rolling pins wrapped in sandpaper with a metal shaft > screwed in the end and put in a drill for bonzer style concaves. You will never get the semidry with the disk sander. I would never tell a beginner to use that power tool in that manner. Disaster will strike , as well as setting a very bad president.The real lesson is to watch first, many times. Listen to the J.A. guy , he knows his shit.

Point well taken Outside Looking In. Any power tool (planer, circular saw, chain saw, router, disc sander, etc.) can wreak havoc on a board in a hurry. Not sure what you mean “you’ll never get the semidry with the disk sander” and god knows we’ve had enough bad presidents!

You will never get the semidry with the disk sander. I would never tell a > beginner to use that power tool in that manner. Disaster will strike , as > well as setting a very bad president.The real lesson is to watch first, > many times. Listen to the J.A. guy , he knows his shit. I guess this is why I never got through school. What a joke. I was meaning to point out symmetry. Similarity on either side of the center strip. And those damn Presidents sure set bad precedents. Semidry? I bet I buy some wine for dinner tonight.

seriously, your point is well taken - you can screw up a board PDQ shaping with a sander - Pleskunas makes a convex shaped rasp that would be slower and safer.

I guess this is why I never got through school. What a joke. I was meaning > to point out symmetry. Similarity on either side of the center strip. And > those damn Presidents sure set bad precedents. Semidry? I bet I buy some > wine for dinner tonight. NEVER HURRY, AS A BACKYARD BUILDER, YOUR NOT IN A RUSH, SO A 5" SHARP SURFORM DOWN THE OUTLINED CONCAVES STRINGER AND A HARD SPONGE BACKED 80 GRIT SANDING SCREEN TO 220 SANDING SCREEN FINISH WILL DO IT (A EASY LOW RISK NOVICE METHOD).