Okay one thing that I disagree with is using a block to drill a #40 hole. Unless you are drilling through some crazy contours or a thick stack-up, its unnecessary to use a block for a pilot hole. I say this because you want to be sure you are able to see your bit when drilling, its easier to stay center on your mark and it will prevent you from ever coming off of your center mark. And even if you are a few degrees off (slight chance when drilling a contoured surface) you will be able to straighten that hole and get it back to 0 degrees angularity when you are upsizing. Just my 2 cents, ive seen a lot of defects when people use blocks trying to drill #40 holes.
@@annakquinn7084 for a pilot size hole it’s unnecessary and can be risky unless you are drilling through a thick/ contoured stack up. You should always try to use a guide block when drilling to full size. In the real world there are many places with minimal access and a drill block can throw off your ergonomics and cause you to miss your mark and you’re not able to see if the bit is wandering off either. And even if your pilot hole is angled, it doesn’t matter, your full size bit and guide block will straighten it out. Just not worth the risk of missing s pilot hole.
@@K12-n5l if you watch the video, he was drilling a thick plate. Don’t beat around the bush. Also, if you know how to use the tools, you will be fine. Perpendicularity tolerance is a must. If you don’t want to risk, use scrap material and master your craft or leave it to the pros.
@@annakquinn7084 haha okay. I can tell you’ve never worked in confined space. Sorry but a drill block doesn’t fit everywhere and nothing we work on is flat
@@swampfoot Thank you for the quick reply! Are you certain it is from Brown? The linked kit's block (BAT-54SBK) doesn't use a lock screw but a set screw on the side -- and no overhang. I actually emailed Brown earlier today and he said they don't have the block shown in your video in stock or catalog. Perhaps it was a custom-spec order, or an older model?
I have a doubt how it is possible to enlarge from 40 to 30 ? Means 30 to 40 only have to come right? Another doubt pilot hole is the hole that is to be drilled first? Here it ia showing enlarging the already existing hole? How Please tell me
Scribing is prohibited in our manufacturing facility. Gouges in aircraft skins, especially wing skins, can easily cause them to be scrapped due to material removal. It causes stress concentrations. It also penetrates and removes the thin alodine treatment, which can cause a nucleation point for corrosion to start.
Hi thank you material.
What is the rule for drill bit length?
Okay one thing that I disagree with is using a block to drill a #40 hole. Unless you are drilling through some crazy contours or a thick stack-up, its unnecessary to use a block for a pilot hole. I say this because you want to be sure you are able to see your bit when drilling, its easier to stay center on your mark and it will prevent you from ever coming off of your center mark. And even if you are a few degrees off (slight chance when drilling a contoured surface) you will be able to straighten that hole and get it back to 0 degrees angularity when you are upsizing. Just my 2 cents, ive seen a lot of defects when people use blocks trying to drill #40 holes.
The solution is to learn how to use a block. Extensive research shows that a block contributes significantly to precision and fatigue resistance.
@@annakquinn7084 for a pilot size hole it’s unnecessary and can be risky unless you are drilling through a thick/ contoured stack up. You should always try to use a guide block when drilling to full size. In the real world there are many places with minimal access and a drill block can throw off your ergonomics and cause you to miss your mark and you’re not able to see if the bit is wandering off either. And even if your pilot hole is angled, it doesn’t matter, your full size bit and guide block will straighten it out. Just not worth the risk of missing s pilot hole.
@@K12-n5l if you watch the video, he was drilling a thick plate. Don’t beat around the bush. Also, if you know how to use the tools, you will be fine. Perpendicularity tolerance is a must. If you don’t want to risk, use scrap material and master your craft or leave it to the pros.
@@annakquinn7084 haha okay. I can tell you’ve never worked in confined space. Sorry but a drill block doesn’t fit everywhere and nothing we work on is flat
Helpful thank you
This is very useful, thank you. Is there a reference for that particular drill bushing block? I cannot find it anywhere.
Hi Tarik! This is where we purchased our kits:
www.browntool.com/Listview/tabid/344/CategoryID/210/Level/a/ProductID/3660/Default.aspx
@@swampfoot Thank you for the quick reply! Are you certain it is from Brown? The linked kit's block (BAT-54SBK) doesn't use a lock screw but a set screw on the side -- and no overhang. I actually emailed Brown earlier today and he said they don't have the block shown in your video in stock or catalog. Perhaps it was a custom-spec order, or an older model?
@@tarikjn Ah, i could be mistaken, then - in that case I'm not sure where our company got that particular drill block.
I have a doubt how it is possible to enlarge from 40 to 30 ? Means 30 to 40 only have to come right?
Another doubt pilot hole is the hole that is to be drilled first?
Here it ia showing enlarging the already existing hole? How
Please tell me
No disrespect but using a pen instead of a scribe to mark a centre punch location is not aerospace grade quality.
Scribing is prohibited in our manufacturing facility. Gouges in aircraft skins, especially wing skins, can easily cause them to be scrapped due to material removal. It causes stress concentrations. It also penetrates and removes the thin alodine treatment, which can cause a nucleation point for corrosion to start.
@@swampfoot spittin fax
@@swampfoot thats that Same reason why we dont use a Center Punch
No disrespect but you don’t work at the aerospace level. 😊
Well the center punch location is going to get drilled out anyway
Who makes that drill block? Or where do i get one like it. Thank you.