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RED WOODEN CLAMPS!!!!

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Project by KOVA posted 975 days ago 4417 views 22 times favorited 24 comments Add to Favorites Watch


CADA VEZ QUE TENÍA QUE ENCOLAR TABLEROS CON RECORTES, ME ENCONTRABA CON QUE ME FALTABAN PRENSAS!!!!
YO ME HABÍA FABRICADO UNAS PRENSAS CON FORMA DE “C” DE MADERA, PERO AL AJUSTAR SE DESPEGABAN Y NO SERVÍAN: ENTONCES PENSÉ EN LAS PRENSAS LARGAS CON TOPES REGULABLES Y UN FONDO PLANO UNIFORME PARA, PODER SUJETAR UN TABLERO DE UN METRO O MÁS LARGO ;-)
ÉSTAS FUNCIONAN MUY BIEN Y YA HE ARMADO VARIOS TABLEROS CON TOTAL ÉXITO :-)
ESPERO QUE LES GUSTE!!!!!!

EVERY TIME I HAD TO GLUE BOARDS WITH CUTS, I found I’m missing CLAMPS!!
I had MADE SOME “C” FORM WOODEN CLAMPS, BUT TO SET OFF AND NOT BE SERVED: SO LONG THOUGHT IN LONG CLAMPS WITH ADJUSTABLE STOPS AND A UNIFORM FLAT BOTTOM, able to hold a board of a meter or more LONG ;-)
THEY WORK WELL AND ARMED VARIOUS BOARDS WITH TOTAL SUCCESS :-)

Hope you like it !!!!!!

-- KOVA, EL CARPINTERO DEL PUEBLO https://www.facebook.com/pages/El-Carpintero-Del-Pueblo/148976618479733





24 comments so far

View NormG's profile

NormG

4112 posts in 1637 days


#1 posted 975 days ago

Great idea, thanks for sharing

-- Norman

View redryder's profile

redryder

2139 posts in 1735 days


#2 posted 975 days ago

These look quite usefull…....................

-- mike...............

View jackthelab's profile

jackthelab

306 posts in 1326 days


#3 posted 975 days ago

Nice job!

-- Dave in Minnesota - If it ain't broke, improve it!

View nobuckle's profile

nobuckle

1120 posts in 1394 days


#4 posted 975 days ago

Very innovative. Making them sure is cheaper than buying them. Nice work.

Muy innovador. Haciendo que seguro es más barato que comprarlos. Buen trabajo.

-- Doug - Make an effort to live by the slogan "We try harder"

View BuyoMasilla's profile

BuyoMasilla

101 posts in 1181 days


#5 posted 975 days ago

Practicas y hermosas!

¿Que sistema mantiene la parte que aprieta derecha/erecta? Pareciera que podria irse rodando. Tambien la pintura de tus proyectos siempre se ve muy bien. ¿Que tipo de pintura es?

-- Dreaming of the day I might joint two pieces of wood square..........

View Mauricio's profile

Mauricio

6809 posts in 1785 days


#6 posted 975 days ago

Muy Buena idea Kova, nunca sobran las prensas. Yo tambien me hice unas pero de distinta forma, y funcionan muy bien. Aquí va una foto.

Great idea Kova, you can never have enough clamps. I made some clams too but of a different type, they work pretty good. Here is a picture.

-- Mauricio - Woodstock, GA - "Confusion is the Womb of Learning, with utter conviction being it's Tomb" Prof. T.O. Nitsch

View randomray's profile

randomray

111 posts in 1657 days


#7 posted 974 days ago

Thanks so much for sharing this with us .

-- Anybody can break something it takes skill to make or repair stuff .

View linjay's profile

linjay

90 posts in 1257 days


#8 posted 974 days ago

I think the idea of making your own clamps is great and I’ll give you credit for a good try but others should know that these clamps have some fundamental technical problems. (I’m a retired mechanical engineer and my specialty is/was machine design.) My ctritique is meant to be educational not critical and I will try to identify solutions.
The reaction back stop is extremely weak. If you looked at a side view when something was clamped with reasonable pressure required for gluing, the stop would not be close to 90 degrees to the rail—to the point of being non-functional. For those who would like to confirm this just drill a 3/4 to 1” hole at least 2 diameters deep in a soft wood like red wood then put a matching hardwood dowel in the hole and put some load on it. Not only will the dowel move significantly from 90 degrees but the hole will start going oval. If the dowel is a soft wood like the actual stop the deflection will be greater.
A second related problem is that drilling holes in the beam significantly reduces the strength and stiffness of the beam—resulting in more bending deflection.
A third fundamental problem is the wood is soft and like all soft woods is not vey stiff.
A solution that overcomes these problems requires that the beam and stop needs to be harder, stronger and stiffer —like hardwood—with a high modulus of elasticity. see http://www.csudh.edu/oliver/chemdata/woods.htm
A stop can be created without drilling holes in the beam. A standard F clamp uses this principal. But you need a method to prevent the stop from just sliding along the beam. To prevent the stop from tilting it should have some length relative to height. Say L at least 75% to 100% of H.

Steel dowels or bolts thru the stop above and below the beam could be used to create an F clamp effect—but the stop jaw would probably have to have a pivot so it stays perpendicular to the rail. Small notches on the top and/or bottom of the rail could also be used. There are clamps that use this principal.
Secondary issues are the size of threaded rop used. While a buttress type thread is typically used for clamps it’s not in the budget for a home made clamp. But increasing the size to at least 1/2” UNC would have some advantages that would outweigh the slight extra cost. Namely—less chance of getting bent and more travel per revolution due to the higher screw pitch.
The small thumbscrew makes it difficult to apply significant load—umless you are using a wrench to increase the leverage.
Hope this helps.

-- It's easy when you know how. Ontario, Canada

View KOVA's profile

KOVA

1311 posts in 1012 days


#9 posted 974 days ago

LINJAY:
ADJUNTO UNA IMAGEN DE CUANDO LAS PRENSAS NO ESTABAN AÚN PINTADAS Y YA LAS USÉ PARA ENCOLAR UN JUGUETE ;-)
LA IDEA DE ÉSTAS PRENSAS ES ENCOLAR TABLEROS DE NO MÁS DE 4,5 CMS DE ESPESOR. SIN APLICAR DEMASIADA FUERZA. LAS HICE CON MADERAS DURAS DE LAS PATAS DE UNA MESA QUE DESARMÉ Y A LOS TOPES LOS HICE CON GRAPPIA QUE TAMBIÉN ES UNA MADERA DURA ;-) SI LOS AGUJEROS SE DEFORMAN EN EL FUTURO VOY A REEMPLAZAR EL TIRANTE POR UNO MÁS DURO Y SI ÉSTAS ROSCAS NO AJUSTAN, LAS REEMPLAZARÉ POR OTRAS MÁS GRUESAS PERO HAY ALGO QUE NO VOY A HACER: COMPRARME UNAS :-)

LINJAY:
ATTACHMENT A PICTURE OF THE CLAMPS WHEN WERE NOT EVEN PAINTED, AND USE THEM FOR GLUE A TOY ;-)
THE IDEA OF THEM CLAMPS IS GLUE BOARDS OF NOT MORE THAN 4.5 cm thick. APPLY WITHOUT FORCE. THE DID WITH THE hardwood table legs to disarm AND STOPS THE DID WITH THAT ALSO IS AN GRAPPIA HARDWOOD;-) If the holes are deformed in the future I will REPLACE THE TIE ROD HARDER FOR ONE AND IF THESE THREADS NO adjustments, we replaced by more THICK BUT THERE IS SOMETHING THAT I WILL NOT DO: I bought some :-)

-- KOVA, EL CARPINTERO DEL PUEBLO https://www.facebook.com/pages/El-Carpintero-Del-Pueblo/148976618479733

View KOVA's profile

KOVA

1311 posts in 1012 days


#10 posted 974 days ago

MOCHOA:
TUS PRENSAS ESTÁN GENIALES Y PARECEN DE FÁBRICA!!!!
YO VÍ UNAS SIMILARES EN UN LIBRO Y SUELEN USARLAS LOS FABRICANTES DE INSTRUMENTOS MUSICALES ;-)
ENTIENDO QUE VOY CAMINO A ALGO TAN COMPLEJO COMO TUS PRENSAS, CON LA FABRICACIÓN DE LAS MÍAS :-)
TE MANDO UN FUERTE ABRAZO Y FELÍZ AÑO 2012!!!!!!

-- KOVA, EL CARPINTERO DEL PUEBLO https://www.facebook.com/pages/El-Carpintero-Del-Pueblo/148976618479733

View KOVA's profile

KOVA

1311 posts in 1012 days


#11 posted 974 days ago

*BUYO QUERIDO:
PRESENTAS SOBRE LA PRENSA, LAS TABLITAS ENCOLADAS: CORRES EL TOPE Y LO PONES EN EL AGUJERO MÁS CERCANO A LA PIEZA A SUJETAR!!!!! LUEGO GIRAS LA MANIJA DEL TORNILLO HASTA AJUSTAR EL CONJUNTO: DE ESTA MANERA REGULO LOS ANCHOS A PRENSAR SIN CONTAR CON UN SISTEMA CORREDIZO COMO EL DE LAS PRENSAS METÁLICAS ;-)
SÓLO PUEDO AJUSTAR PIEZAS DE 4,5 A 5 CENTÍMETROS DE ESPESOR QUE ES LO QUE YO BUSCABA AL DISEÑARLAS :-)
LA PINTURA ES ESMALTE SINTÉTICO AL SOLVENTE, VARIAS MANOS ;-)

TE MANDO UN ABRAZO Y QUE TENGAS UN FELÍZ AÑO NUEVO!!!!!!*

-- KOVA, EL CARPINTERO DEL PUEBLO https://www.facebook.com/pages/El-Carpintero-Del-Pueblo/148976618479733

View KOVA's profile

KOVA

1311 posts in 1012 days


#12 posted 974 days ago

GRACIAS DOUG POR TU OPINIÓN!!!!!
ESTUVE VIENDO TU TRABAJO Y TU TALLER Y ENTIENDO QUE SEGUIMOS CAMINOS SIMILARES ;-)
SEAMOS AMIGOS :-)
THANK YOU FOR YOUR OPINION DOUG !!!!!
I WAS WATCHING YOUR JOB AND YOUR WORKSHOP AND UNDERSTAND THAT WE road seems;-)
Let’s be friends :-)

-- KOVA, EL CARPINTERO DEL PUEBLO https://www.facebook.com/pages/El-Carpintero-Del-Pueblo/148976618479733

View KOVA's profile

KOVA

1311 posts in 1012 days


#13 posted 974 days ago

DAVE IN MINNESOTA:
GRACIAS POR TU OPINIÓN!!!!!
COINCIDO CONTIGO EN QUE LOS COMENTARIOS POSITIVOS SON LO MEJOR QUE HAY ;-)
SEAMOS AMIGOS!!!!!
DAVE IN MINNESOTA:
THANK YOU FOR YOUR OPINION !!!!!
Agree with you that the positive comments ARE THE BEST THERE;-)
Let’s be friends !!!!!

-- KOVA, EL CARPINTERO DEL PUEBLO https://www.facebook.com/pages/El-Carpintero-Del-Pueblo/148976618479733

View Mauricio's profile

Mauricio

6809 posts in 1785 days


#14 posted 974 days ago

Feliz Ano a ti tambien Kova!

-- Mauricio - Woodstock, GA - "Confusion is the Womb of Learning, with utter conviction being it's Tomb" Prof. T.O. Nitsch

View KOVA's profile

KOVA

1311 posts in 1012 days


#15 posted 974 days ago

MAURICIO:
QUIERO CREER QUE TU TECLADO NO POSEE LA LETRA “Ñ” Y TE REFIERES AL 2012 Y NO A UNA CIRUGÍA DE CÓLON ;-)

-- KOVA, EL CARPINTERO DEL PUEBLO https://www.facebook.com/pages/El-Carpintero-Del-Pueblo/148976618479733

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