Primitive Archer

Main Discussion Area => Bows => Topic started by: simk on September 02, 2020, 07:20:58 am

Title: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: simk on September 02, 2020, 07:20:58 am
Heyho
Finally got round to take a few pics of this one. It was kinda multiple experiment again.
First time compression spruce from the lower side of a big branch. To really test it I went for a round belly off course. Silly grained ash backing also. Silly grain on the belly incl. a few yew plugs.
As failure was an option I went for the most simple design  ;D
The compression spruce is quite heavy, bowweight is around 500 gramms. Still shoots the 10gpp within the lower 170s. It has been shot a few hundered arrows now, it has been overdrawn to 30" also a few times and I deliberatly let it strung for two days and still holds the profile. I find that remarkable and like it.
Thanks again everybody for showing your nice bows!
Cheers
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: simk on September 02, 2020, 07:22:02 am
...
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: simk on September 02, 2020, 07:23:28 am
thanx for watching  ;D
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: Marc St Louis on September 02, 2020, 07:34:40 am
Very nice. 

What species of spruce is that?
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: BrandonH on September 02, 2020, 08:19:03 am
Is that reflex natural from the timber or did you form some reflex in?

I am also impressed by the result you got.
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: dylanholderman on September 02, 2020, 08:30:21 am
Way cool I’ve been wanting to make one of that style bow sense I read about them a couple years ago but I’ve yet to come across a piece I have permission to harvest.
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: bjrogg on September 02, 2020, 08:38:12 am
Beautiful profiles. Really pretty combination of woods to. Nice performance numbers to. Didn’t notice a draw weight. Be interesting to see how it holds up. I think you gave it a very good chance with that tiller.
Bjrogg
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: Woody roberts on September 02, 2020, 08:49:38 am
I like that a lot.
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: DC on September 02, 2020, 09:16:43 am
Very nice and very interesting ;) Is the Spruce showing any sign of wanting to move around?
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: simk on September 02, 2020, 01:31:17 pm
Marc: Thanx, glad you like it  ;D its picea abies in latin and my dictionnary says norway spruce or red pine in english.

Brandon: I glued in 2" of reflex. it holds 1" looks like all reflex sits in the grip...funny, dunno why  ;D

Thanx dylanholderman!

Thanx bjrogg! We'll see  ;D This combo is from some of the most common trees here - one more reason for me to try it. it's 44# @ 28"

Thanx Woody and DC! Its not moving around since it was built. It likes to reflex and warp a little if you season as half logs. If you cut slats before drying it's warping a little more. If you cut slats off-center of log you run into serious trouble making a bow. Things can be corrected with steam and dry heat but its more brittle than ash, bl or osage.

 
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: Will B on September 02, 2020, 03:24:53 pm
That is really nice!  I love the tiller and unstrung profile. Especially after leaving strung for 2days. Impressive!  I might have missed it, but how long is the bow?  Thanks for posting
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: Santanasaur on September 02, 2020, 04:21:35 pm
Wow! Awesome bow and tiller, and not something you see every day.. Makes me want to try this with compression juniper, or some old growth douglas fir. Very interesting stuff simk!
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: Hamish on September 02, 2020, 04:27:57 pm
Nice job. This one turned out really well.
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: loefflerchuck on September 02, 2020, 06:03:54 pm
Well done! and bravo for being unique.
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: backtowood B2W on September 03, 2020, 12:00:55 am
Another bow which shows your talent, making bows.
Nice experiment and outcome! :OK
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: bownarra on September 03, 2020, 06:04:56 am
Very interesting bow and wood combo. :)
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: simk on September 04, 2020, 02:39:59 pm
thanx guys.
santanasaur: nice bow and buildalong. enjoyed watching it  (-S i do not have much doubts other compression conifers will also work. looking forward  (-P
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: druid on October 15, 2020, 03:06:54 pm
Skillfull work and very good tiller. 😌💪🏾
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: medicinewheel on October 16, 2020, 02:04:57 am
Now that really is something different! Like it a lot.
I could get by some compression wood from huge branches of European pine. With some natural reflex even. Do you think that is worth trying?
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: simk on October 16, 2020, 03:01:17 am
thanks guys!

I could get by some compression wood from huge branches of European pine. With some natural reflex even. Do you think that is worth trying?

off course you can Frank, this is swiss red spruce  ;D only needs a backing
cheers
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: Pappy on October 16, 2020, 05:03:13 am
Beautiful bow, nice work. :)
 Pappy
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: Parnell on October 16, 2020, 07:53:38 am
Very interesting work!  Beautiful job with the bow.
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: kbear on October 16, 2020, 02:49:38 pm
I just want to reach into the screen and grab it. It looks as though it would feel very nice in the hand!Nice work, as usual.
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: Aaron H on October 20, 2020, 11:27:34 am
Very nice, great combo
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: Selfbowman on October 20, 2020, 11:58:36 am
Well done . I like the to see folks think out side the box.
Arvin
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: bassman on October 20, 2020, 12:25:05 pm
Nice bow . Good speed. Different.
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: gutpile on October 21, 2020, 01:43:03 pm
If I attempted that I would of done it ash back.. but very nice... I didn't know spruce had good tension.. nice job..gut
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: Will B on October 21, 2020, 03:45:52 pm
Great looking bow and great bend!  Thanks for sharing
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: simk on October 22, 2020, 06:30:16 am
thany guys, I appreciate it a lot  ;D
gut: the back is ash - the belly is spruce ;)
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: gutpile on October 22, 2020, 08:15:56 am
haha.. I must be blind.. bow turned out sweet my friend... gut
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: BoltBows on October 22, 2020, 02:51:18 pm
Ha that's very cool and interesting! Well done!
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: simk on January 02, 2022, 06:57:25 am
Something interesting about this bow and a happy new year everybody!

I left this bow in the cool barn than where - due to rainy weather- also moisture must have been quite high. When looking at it yesterday I realized it was reflexed about 2" - this was in fact more reflex than I originally glued in to start with. After some tillering and shooting the reflex was maybe 1/2" to 1". After I took it in the warm and dry house some of the reflex dissappeared again over night but it still is about as much as I glued in originally (pic). To me it looks like the legend of compression wood seems to prove. Very intersting!

Side remark: I also stated that many of my heat treated bows gained a lot of reflex since I shot them in an put them in the corner for a while. They - over time - really spring back to almost max reflex they were originally induced right after heat treating!!! Another very interesting thing  :) To me it looks like the heat treating really prevents permanent compression damage almost to a 100%

cheers
Title: Re: Ash-backed Compression Spruce / 64" 44# @ 28"
Post by: willie on January 05, 2022, 02:36:42 am
To me it looks like the heat treating really prevents permanent compression damage almost to a 100%
cheers
Thanks for reporting. 


In correspondence with some finnish bowyers a few years back, I learned overdrying was detrimental to keeping the belly intact, at least with the compression "spruce" being utilized there. examples of trees harvested for compressionwood in this account
 http://www.primitivearcher.com/smf/index.php/topic,68162.0.html
show trees with lesser curvature than some examples used in the finnish bows

indigenous bowyers in Alaska reported having to keep their bows outside, lashed to trees in winter, to keep them from drying in the Arctic air too much. I believe the bows were tillered to be used in the warmer summer months in highly humid coastal areas and for use at sea in the sea otter harvest.