-
Thanks re. hardboard -didn't know it came than thin. Sounds more like 'brittle board' but will take a look.
Re. chiseling - something like this? https://www.amazon.co.uk/Draper-Tools-26120-Builders-Certified/dp/B00BWR5YO2/ref=asc_df_B00BWR5YO2/?tag=googshopuk-21&linkCode=df0&hvadid=205341469171&hvpos=&hvnetw=g&hvrand=9801808503969127254&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9045311&hvtargid=pla-421904623593&psc=1&th=1&psc=1
This is an overhead which may explain more clearly?
1 Attachment
-
CYOA
-
Get bolsters with rubber guards if you are doing it by hand. You WILL miss and smash your hand otherwise. I managed to do so, even with the guard, when taking out the chimney and fire place.
https://www.screwfix.com/p/magnusson-guarded-bolster-cold-chisel-set-3-pieces/5429V
An SDS with a chisel bit would be easier though if you can source one.
-
I use a Hultafors chisel, fully sharpened to begin with. Depending on how much I have to do it might need sharpening during the job.
I prefer it but I also have an sds chisel if the going gets too tough.
stevo_com
Airhead
At 3-4mm there's very little difference between ply and hardboard. Hardboard is available in smaller sheets and it's easier to cut with a stanley knife. It's also a bit more inert.