I have searched, but am still unclear on weather you still need to have the parts you are coating bead blasted before applying gun-kote or if you can apply directly over the factory parkerized finish. thanks in advance
Gunsmithing Prep for gunkote
- Thread starter whycanti
- Start date
Re: Prep for gunkote
A good base for coating is blasting with 120 alum. oxide (glass beads tend to polish not scuff the surface). Parking after blasting adds to the prep. for the finish. If you have a factory parked finish, it should have been dipped in some type of post treatment (oil) after parking. You may have luck with soaking the parts in acetone to remove any oils and then coating.
I would suggest the acetone soak and then blasting with alum. ox. before coating.
You coating will only be as good as the prep work you do to the metal.
A good base for coating is blasting with 120 alum. oxide (glass beads tend to polish not scuff the surface). Parking after blasting adds to the prep. for the finish. If you have a factory parked finish, it should have been dipped in some type of post treatment (oil) after parking. You may have luck with soaking the parts in acetone to remove any oils and then coating.
I would suggest the acetone soak and then blasting with alum. ox. before coating.
You coating will only be as good as the prep work you do to the metal.
Re: Prep for gunkote
Yes, it needs to be blasted with Alum. Oxide, I have tried not blasting an SPS Varmint because it was already a rough finish. It went on fine, but when I put tape on the barrel to bed the action it pealed off. If properly blasted it will not do this. It was the first time using Gunkote though, live and learn.
Yes, it needs to be blasted with Alum. Oxide, I have tried not blasting an SPS Varmint because it was already a rough finish. It went on fine, but when I put tape on the barrel to bed the action it pealed off. If properly blasted it will not do this. It was the first time using Gunkote though, live and learn.
Re: Prep for gunkote
I've coated some BCG's that were parkerized and did not blast them ~ they came out great and no problem with sticking or the finish.
I did clean/degrease with acetone first.
Other parts I do blast with AO first and apply KPHOS on SS parts ~ and repark other steel then KG or Cerakote.
I've coated some BCG's that were parkerized and did not blast them ~ they came out great and no problem with sticking or the finish.
I did clean/degrease with acetone first.
Other parts I do blast with AO first and apply KPHOS on SS parts ~ and repark other steel then KG or Cerakote.
Re: Prep for gunkote
I contacted kg and asked weather I should blast or just degrease. They told me that as long as long as the parkerizing was in good shape (not completely oil soaked, chipped, scratched etc) that it would be just fine to go directly over the existing surface. I went ahead and coated the slide on my carry gun which sees a fair bit of wear from my holster and the bolt from my sps varmint. These should both be fairly easily redone if the gun-kote fails. on a side note, I was very impressed at how easy it was to apply and at the finish I was able to achieve.
I contacted kg and asked weather I should blast or just degrease. They told me that as long as long as the parkerizing was in good shape (not completely oil soaked, chipped, scratched etc) that it would be just fine to go directly over the existing surface. I went ahead and coated the slide on my carry gun which sees a fair bit of wear from my holster and the bolt from my sps varmint. These should both be fairly easily redone if the gun-kote fails. on a side note, I was very impressed at how easy it was to apply and at the finish I was able to achieve.
