Bowmaking tools

I’ ve never posted my favourite tools for bowmaking. But the truth is that I’ m using them daily and they deserve to be  honoured. Especially right now, since some weeks I’ m very proud of having purchased a SIGMA DP2– camera. This camera is a dream for people, who like to care for details and to take pics by their own, not automatically. SIGMA- cameras are working with a FOVEON– sensor, all other cameras are using a BAYER- sensor, the FOVEON  is another capablity making SIGMA- cameras so different. SIGMA- cameras are made for selfbowyers! So my SIGMA DP2 has become another daily tool for my work.

Hatchet, adze, drawknife and a knife with a 300years old blade and a handle made of a bladebone of a moose
Hatchet, adze, drawknife and a knife with a 300years old blade and a handle made of a bladebone of a moose

The hatchet and the adze are presents of 2 guys from Turkey, who did some of my bow- classes. It is a good old custom in Turkey to make a gift to a teacher or a master, these tools are meaning a lot to me, they are made in local blacksmith shops in Turkey and I’ m using them a lot.

This drawknife is  working the best for, during the last 20 years I’ ve really been using a lot of different types of drawknife, but this one is my favourite. It’s not to long, the globular handles are charming my hands very properly.  The blade is made of real thick steel.  It is made by the French ARNAUD BROTHERS COMPANY.

bxplo tools 2 5 2013
The ARNAUD knife at work: tillering an osage bow

The knife with the moose-handle is a beauty and a great tool, which I’ m using daily. The blade is about 300 years old, maybe it has been used for killing, its sheer age leaves space for fantasy. It is made by a former friend of mine, a pastry chief, who was famous for his scrimshaw works too. He made  the knife, I made him a plains- bow of osage, hey, that is  the real deal. No money!

Favourite tools are almost like an extension of my hands and fingers, I don’t feel comfort or a bit helpless when I’ ve to use other  knifes or hatchets. I can’ t work without them, it’s like being married.

I prefer blades not to sharp for bow- making, otherwise the blades will “bite” to deep into the wood. Usually my moose- knife is very sharp for working hard and knotty areas in a stave, it is my tool of choice when fine- tillering a bow.

Another pic of the adze, the hatchet, drawknife andthe moose- knife
Another pic of the adze, the hatchet, drawknife and the moose- knife

Next post is dealing with my progress on the “zero- brace- height- bow, this design is so delicious, everybody is foretelling  its explosion.

The explosive "zero- brace- height- bow
The explosive “zero- brace- height- bow
Advertisements

Selfmade clamps for laminated bow- constructions

About 10 years ago I did my first hornbows with usual bow- woods as a core: ash, elm, black locust, wild cherry………The glueing turned out to be a kind of not to much reliable The glueing procedure itself was  becoming more and more a thing of chaos and even some horror:  glue drying to fast, fingers full of glue, glue everywhere, all things glued up but not the horn to the core- wood…………….these flops made me to think the whole thing over, to reset and to update my mind about traditional glueing of laminated bow- construction. Remember 10 years ago the infos dealing with hornbows and other laminated bows were not as wide- spreaded as today. It took me another 4 years to become able to manage the procedure in a more secure way. When glueing bow- lams with natural glues it is a must to organize the whole procedure very carefully. Clean and degrease the parts to be glued with curd soap, coat them several times with a thin solution of glue: water- glue= 5 : 1. Take care that the workshop is well- tempered- 77F, as well as the glue- 150F, preheat the wood and the horn to about 75F. Place your clamps or rope ready for to go. When the glueing is done fix the lam to a straight and stable wooden lath for to make sure that the bow will stay aligned. Maybe you want a reflexed or recurved bow, so fix the bow to an according wooden form. This procedure is called glue- shaping.  The Japanese makers of the traditional Yumi- bows are using a rope and wedges made of bamboo for to glue- shape the multicurved yumis.

After having done my experiences in glueing bow- lams I ended up in using selfmade clamps for to match as exactly as possible the needs of a well working glueing.

selfmade clamps- bottom-, side-, top view

The clamps are made of mountain- maple slats cut to 3″ in length, about 1/2″ in thickness for the bottom piece and 1/3″ for the upper piece, width is about 1″. For to screw them down I use thread rods and fitting nuts, countersinked into the bottom piece of the clamp. It´s also a good idea to use winged screws, but for to develop heavier pressure I prefer to screw the clamps down with a ratchet wrench.

selfmade clamps in action- use a wrench of your choice or wing screws

It´s also possible to do these clamps by glueing small pieces of wood at their internal sides for to guide the lams not to slip out of place. But don´t do them to thick, otherwise you can´t produce the necessary pressure: I leave an open space of about 1″ – 11/2″ in width and about 1/3″ in thickness,  you can make clamps with more or less open space matching the different cross- sections of the lam.

another view of the clamps in action- note the glued on small pieces of wood working as a guide

Before using the selfmade clamps open them up, organize the glueing well, prepare all tools you need, take care for the right temperature of the workshop and the glue.  The advantage of these clamps is that you can develop pressure where it is needed, more or less. Don´t screw them down to heavy.  Just as far as the glue is flowing out of the glueline.

These clamps are highly effective, done by yourself you´ve to buy screws, nuts and thread rod. Choose them made of iron not made of aluminium, as I did it for the first time. Iron is much more stable.