Stuck in a glue problem .

[Kevin the grey]

I saw a lamp post being manufactured . A long form was lubricated and strands of epoxy resin soaked fibers were wrapped along the pole in a criss cross overlapping fashion from one end of the pole to the other . When the desired thickness and pattern was achieved it was sprayed with more resin and then a hardener . After this was cured and sanded the inner form was removed and a very strong slightly flexible tube for a lamp post was produced .

I want to do the opposite . I wish to fill a tube with epoxy glue to give it a higher hoop strength and give me a solid structure to work with instead of a tube . Mine would be the stronger of the two structures as the outer form of mine would stay in place and the lamp post form is removed . Do you think I could do this with Lepages regular epoxy ? The tube section it will be in will flex slightly and repeatedly .

As a separate question . Is there a less expensive product I could use such as bondo or other automotive fibreglass product I could use ?

 

[ddean]

how big are you talking ?

pen / breadbox / lamp-post ?

& specific application might help get ideas


medium size---
might do exactly the opposite of the lightpole
roll up auto/boat F-G-cloth saturated in resin,
insert, then pour in more auto resin & vibrate out bubbles
---heavy---

huge---
insert several fiberglass electric-fence-poles ~5/16" x 4' [~$1-$2 each]
as filler then the resin
---heavier!---

micro---
loose fibers in resin for strength
resin only just to fill


model [hobby] shops carry a variety of f-glass stock [tubes,rods,etc]
& resins

<> THEY call me 'Dean' <>

<> Caution: Not all ideas vented from this brain are entirely based on empirical data. JMO-M2C-fWiW-iIRC-YMMV-fYI-TiA-YW-GL
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[Kevin the grey]

how big are you talking ?

pen / breadbox / lamp-post ?

& specific application might help get ideas


medium size---
might do exactly the opposite of the lightpole
roll up auto/boat F-G-cloth saturated in resin,
insert, then pour in more auto resin & vibrate out bubbles
---heavy---

huge---
insert several fiberglass electric-fence-poles ~5/16" x 4' [~$1-$2 each]
as filler then the resin
---heavier!---

micro---
loose fibers in resin for strength
resin only just to fill


model [hobby] shops carry a variety of f-glass stock [tubes,rods,etc]
& resins

REPLY: Thanks for focussing in on the solution . It is to fill a bamboo shaft to a depth of roughly 3 inches . 1/8th I: I think the fibrous content idea could be substitued and modified by a bamboo skewer inserted into the shaft . It has the perfect surface structure to allow the glue to key into it . The reason I am following this method instead of the traditional method is that For this application I am using smaller diameter bamboo for childrens arrows .
Larger shafs utilise wood or horn nock plugs . ( The horn plugs are excessively expensive with good reason as they are works of art to me .)
I hope one day to be able to make my own horn nocks . That will be a while yet . They must all be exactly the same dimensions . To me I may create one good copy . It is the constant duplication of the process that stymies me . Even utilising jigs it is quite the task .

I will look into the various sources you have given me .Thanks a lot .