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Zorbit
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+x+x+x+x+x+x+xaluminium plate is not adhering to a carbon fiber laminate.Is it because my aluminium surface is too smooth? I tried etching process to make it rough.But It did not work out well.Is sanding a better option than etching? When you say etch? What exactly do you mean? Its better to roughen up the ali surface with sand paper or other abrasives at least 240grit. Then clean with acetone and bond within a few hours. By etching I mean using chromic acid to roughen the surface a bit Sanding would be easier and faster imo, Degrease first with acetone or degreaser, use fresh cloth after cleaning everytime till you dont see any more residue on your cloth, that way you are sure no grease or silicone or whatever is left on your plate THEN start sanding, otherwise you will fill the scratches with grease if it hasn't been cleaned before. then degrease and clean again. I would go for a 80 grit to leave some scratches and to be fully sure take a knife and raster is with the knife for more mechanical bond. Is sanding enough? Is it used for making the surface rough or roving the oxide layers primarily... Also I'm using epoxy resin and hardener as adhesive... Thank you didnt know it was cf tube on a plate  I would sand and clean the surface that will be bonded on the carbonfiber tube and the plate, but you can do whatever you want  it's just how I would do it. why dont you use a glue dedicated to these types of projects? Easycomposites has a wide range of 2K adhesives for bonding CF to CF or to plastics and metals Is sanding enough to make the aluminium surface rough? If you want ultimate strength with aluminium and epoxy then sand it through the wet epoxy. Messy, but effective.
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Singhnishesh
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Group: Forum Members
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+x+x+x+x+xSanding will be fine 80grits perfect,just blow down,decrease an bond If you really want a good bond drill a couple of holes an rivet the part on as you glue it Thank you for the reply "Blow down ,decrease an bond?" Sorry i did not get you
Sand Blow down with a air line if you have one Degrease (not decrease as auto correct put) Ideally wipe down with acetone Then bond Sir Sanding doesnt make the surface that rough. Is it a problem? It just leaves scratches Are you rubbing down by hand ??? Ideally you should use a air tool ( 90deg die grinder) with a top of disc but by hand is just as good as long as the metal isn't shiny Yes sir by hand 80 grit should suffice?
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f1rob
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Group: Forum Members
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+x+x+x+xSanding will be fine 80grits perfect,just blow down,decrease an bond If you really want a good bond drill a couple of holes an rivet the part on as you glue it Thank you for the reply "Blow down ,decrease an bond?" Sorry i did not get you
Sand Blow down with a air line if you have one Degrease (not decrease as auto correct put) Ideally wipe down with acetone Then bond Sir Sanding doesnt make the surface that rough. Is it a problem? It just leaves scratches Are you rubbing down by hand ??? Ideally you should use a air tool ( 90deg die grinder) with a top of disc but by hand is just as good as long as the metal isn't shiny
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Singhnishesh
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Group: Forum Members
Posts: 11,
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+x+x+xSanding will be fine 80grits perfect,just blow down,decrease an bond If you really want a good bond drill a couple of holes an rivet the part on as you glue it Thank you for the reply "Blow down ,decrease an bond?" Sorry i did not get you
Sand Blow down with a air line if you have one Degrease (not decrease as auto correct put) Ideally wipe down with acetone Then bond Sir Sanding doesnt make the surface that rough. Is it a problem? It just leaves scratches
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Singhnishesh
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Group: Forum Members
Posts: 11,
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+x+x+xSanding will be fine 80grits perfect,just blow down,decrease an bond If you really want a good bond drill a couple of holes an rivet the part on as you glue it Thank you for the reply "Blow down ,decrease an bond?" Sorry i did not get you
Sand Blow down with a air line if you have one Degrease (not decrease as auto correct put) Ideally wipe down with acetone Then bond Thank you
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f1rob
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Group: Forum Members
Posts: 237,
Visits: 4.8K
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+x+xSanding will be fine 80grits perfect,just blow down,decrease an bond If you really want a good bond drill a couple of holes an rivet the part on as you glue it Thank you for the reply "Blow down ,decrease an bond?" Sorry i did not get you
Sand Blow down with a air line if you have one Degrease (not decrease as auto correct put) Ideally wipe down with acetone Then bond
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Singhnishesh
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Group: Forum Members
Posts: 11,
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+xSanding will be fine 80grits perfect,just blow down,decrease an bond If you really want a good bond drill a couple of holes an rivet the part on as you glue it Thank you for the reply "Blow down ,decrease an bond?" Sorry i did not get you
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Singhnishesh
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Group: Forum Members
Posts: 11,
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+x+x+x+x+x+xaluminium plate is not adhering to a carbon fiber laminate.Is it because my aluminium surface is too smooth? I tried etching process to make it rough.But It did not work out well.Is sanding a better option than etching? When you say etch? What exactly do you mean? Its better to roughen up the ali surface with sand paper or other abrasives at least 240grit. Then clean with acetone and bond within a few hours. By etching I mean using chromic acid to roughen the surface a bit Sanding would be easier and faster imo, Degrease first with acetone or degreaser, use fresh cloth after cleaning everytime till you dont see any more residue on your cloth, that way you are sure no grease or silicone or whatever is left on your plate THEN start sanding, otherwise you will fill the scratches with grease if it hasn't been cleaned before. then degrease and clean again. I would go for a 80 grit to leave some scratches and to be fully sure take a knife and raster is with the knife for more mechanical bond. Is sanding enough? Is it used for making the surface rough or roving the oxide layers primarily... Also I'm using epoxy resin and hardener as adhesive... Thank you didnt know it was cf tube on a plate I would sand and clean the surface that will be bonded on the carbonfiber tube and the plate, but you can do whatever you want it's just how I would do it. why dont you use a glue dedicated to these types of projects? Easycomposites has a wide range of 2K adhesives for bonding CF to CF or to plastics and metals Is sanding enough to make the aluminium surface rough?
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f1rob
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Group: Forum Members
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Sanding will be fine
80grits perfect,just blow down,decrease an bond
If you really want a good bond drill a couple of holes an rivet the part on as you glue it
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Matthieu Libeert
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Group: Forum Members
Posts: 955,
Visits: 3.4K
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+x+x+x+x+xaluminium plate is not adhering to a carbon fiber laminate.Is it because my aluminium surface is too smooth? I tried etching process to make it rough.But It did not work out well.Is sanding a better option than etching? When you say etch? What exactly do you mean? Its better to roughen up the ali surface with sand paper or other abrasives at least 240grit. Then clean with acetone and bond within a few hours. By etching I mean using chromic acid to roughen the surface a bit Sanding would be easier and faster imo, Degrease first with acetone or degreaser, use fresh cloth after cleaning everytime till you dont see any more residue on your cloth, that way you are sure no grease or silicone or whatever is left on your plate THEN start sanding, otherwise you will fill the scratches with grease if it hasn't been cleaned before. then degrease and clean again. I would go for a 80 grit to leave some scratches and to be fully sure take a knife and raster is with the knife for more mechanical bond. Is sanding enough? Is it used for making the surface rough or roving the oxide layers primarily... Also I'm using epoxy resin and hardener as adhesive... Thank you didnt know it was cf tube on a plate I would sand and clean the surface that will be bonded on the carbonfiber tube and the plate, but you can do whatever you want it's just how I would do it. why dont you use a glue dedicated to these types of projects? Easycomposites has a wide range of 2K adhesives for bonding CF to CF or to plastics and metals
Founder MAT2 Composites X Sports
website: www.mat2composites.com  
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