Definition of countersink in English:

countersink

verbcountersunk ˈkaʊntəsɪŋkˈkaʊn(t)ərˌsɪŋk

[with object]

1Enlarge and bevel the rim of (a drilled hole) so that a screw, nail, or bolt can be inserted flush with the surface.
扩大（钻孔）的端口使其成埋头孔；打埋头孔于
drill and countersink the hole for mounting the ladder to the wall
Example sentencesExamples
- All the clamp holes of the panels were countersunk with this bit so that the screw heads are flush.
- Construction began by countersinking the holes for the bolster rivets slightly.
- Drill four 3/16-inch clearance holes in each rib before countersinking the top surface to bring the screw head flush.
- Drill and countersink screw holes for mounting screws.
- I've also countersunk the holes so no screwheads stick up later on.
1. 1.1 Drive (a screw, nail, or bolt) into a countersunk hole.
  把（螺丝钉等）钻入埋头孔
  countersunk screw heads
  Example sentencesExamples
  You can even countersink and cover the screws with a dab of caulk.
  Use 12 or 16 HDG finishing nails and countersink them with a nail set.
  Just get plenty of screws in and make sure that they are countersunk and that they hit the studs.
  Search out any protruding nail heads and countersink them with a nailset.
  Use a nail punch to countersink all nail heads approximately 1/8 ‘below the wood surface.’
  After the first sanding, check to see if any nails are now protruding, and, if so, countersink them.
  To help prevent recurrence, countersink the nails and swab the holes with a water repellent.
  There is a second layer of plexi to attach to this, so I countersunk the screwheads so they were flush
  Imagine driving a two-inch finish nail into solid oak with no predrilling and having it perfectly countersunk, all in less time than it takes to pick up a hammer.
  First, countersink the nails and swab the holes with a water repellent.
  Nail heads should be flush with the surface, but not countersunk as it can cause the backer board to crack or break.
  Keep in mind, if you are using spring metal, that the nail heads should be slightly countersunk so that they do not catch on the opposite rail when the window is opened.
  It's helpful to first pre-drill a small hole in the wood where you want to countersink the brass screws.
  When applying directly over an old floor, countersink any protruding nails and sand off any paint, wax, or varnish that might affect the adhering ability of the adhesive.
  Flat heads are always countersunk or rest flush with the surface.
  A thin layer of thinset adhesive is applied to the top of the plywood using a notched trowel, then the cement board is put in place and secured with flathead screws that are countersunk into the surface.
  Then secure with 1-inch drywall screws, making sure they are countersunk.
  Depending on how far the bolts stick out beyond the boards, we either countersink the nuts or wrap two layers of duct tape over the ends of the bolts to prevent damage to the greenhouse film.
  I used regular wood screws and countersunk them in the PVC to allow a flush surface.
  Fasten the bottom of each brace with a 6-inch machine bolt and countersink the washer and nut.

Definition of countersink in US English:

countersink

verbˈkaʊn(t)ərˌsɪŋkˈkoun(t)ərˌsiNGk

[with object]

1Enlarge and bevel the rim of (a drilled hole) so that a screw, nail, or bolt can be inserted flush with the surface.
扩大（钻孔）的端口使其成埋头孔；打埋头孔于
drill and countersink the hole for mounting the ladder to the wall
Example sentencesExamples
- Drill and countersink screw holes for mounting screws.
- All the clamp holes of the panels were countersunk with this bit so that the screw heads are flush.
- Drill four 3/16-inch clearance holes in each rib before countersinking the top surface to bring the screw head flush.
- I've also countersunk the holes so no screwheads stick up later on.
- Construction began by countersinking the holes for the bolster rivets slightly.
1. 1.1 Drive (a screw, nail, or bolt) into a countersunk hole.
  把（螺丝钉等）钻入埋头孔
  countersunk screw heads
  Example sentencesExamples
  You can even countersink and cover the screws with a dab of caulk.
  First, countersink the nails and swab the holes with a water repellent.
  Use a nail punch to countersink all nail heads approximately 1/8 ‘below the wood surface.’
  Imagine driving a two-inch finish nail into solid oak with no predrilling and having it perfectly countersunk, all in less time than it takes to pick up a hammer.
  Just get plenty of screws in and make sure that they are countersunk and that they hit the studs.
  Flat heads are always countersunk or rest flush with the surface.
  Fasten the bottom of each brace with a 6-inch machine bolt and countersink the washer and nut.
  It's helpful to first pre-drill a small hole in the wood where you want to countersink the brass screws.
  After the first sanding, check to see if any nails are now protruding, and, if so, countersink them.
  Keep in mind, if you are using spring metal, that the nail heads should be slightly countersunk so that they do not catch on the opposite rail when the window is opened.
  Then secure with 1-inch drywall screws, making sure they are countersunk.
  Depending on how far the bolts stick out beyond the boards, we either countersink the nuts or wrap two layers of duct tape over the ends of the bolts to prevent damage to the greenhouse film.
  Search out any protruding nail heads and countersink them with a nailset.
  There is a second layer of plexi to attach to this, so I countersunk the screwheads so they were flush
  Nail heads should be flush with the surface, but not countersunk as it can cause the backer board to crack or break.
  When applying directly over an old floor, countersink any protruding nails and sand off any paint, wax, or varnish that might affect the adhering ability of the adhesive.
  To help prevent recurrence, countersink the nails and swab the holes with a water repellent.
  A thin layer of thinset adhesive is applied to the top of the plywood using a notched trowel, then the cement board is put in place and secured with flathead screws that are countersunk into the surface.
  I used regular wood screws and countersunk them in the PVC to allow a flush surface.
  Use 12 or 16 HDG finishing nails and countersink them with a nail set.

词汇	countersink
释义	Definition of countersink in English: countersink verbcountersunk ˈkaʊntəsɪŋkˈkaʊn(t)ərˌsɪŋk [with object] 1Enlarge and bevel the rim of (a drilled hole) so that a screw, nail, or bolt can be inserted flush with the surface. 扩大（钻孔）的端口使其成埋头孔；打埋头孔于 drill and countersink the hole for mounting the ladder to the wall Example sentencesExamples All the clamp holes of the panels were countersunk with this bit so that the screw heads are flush. Construction began by countersinking the holes for the bolster rivets slightly. Drill four 3/16-inch clearance holes in each rib before countersinking the top surface to bring the screw head flush. Drill and countersink screw holes for mounting screws. I've also countersunk the holes so no screwheads stick up later on. 1.1 Drive (a screw, nail, or bolt) into a countersunk hole. 把（螺丝钉等）钻入埋头孔 countersunk screw heads Example sentencesExamples You can even countersink and cover the screws with a dab of caulk. Use 12 or 16 HDG finishing nails and countersink them with a nail set. Just get plenty of screws in and make sure that they are countersunk and that they hit the studs. Search out any protruding nail heads and countersink them with a nailset. Use a nail punch to countersink all nail heads approximately 1/8 ‘below the wood surface.’ After the first sanding, check to see if any nails are now protruding, and, if so, countersink them. To help prevent recurrence, countersink the nails and swab the holes with a water repellent. There is a second layer of plexi to attach to this, so I countersunk the screwheads so they were flush Imagine driving a two-inch finish nail into solid oak with no predrilling and having it perfectly countersunk, all in less time than it takes to pick up a hammer. First, countersink the nails and swab the holes with a water repellent. Nail heads should be flush with the surface, but not countersunk as it can cause the backer board to crack or break. Keep in mind, if you are using spring metal, that the nail heads should be slightly countersunk so that they do not catch on the opposite rail when the window is opened. It's helpful to first pre-drill a small hole in the wood where you want to countersink the brass screws. When applying directly over an old floor, countersink any protruding nails and sand off any paint, wax, or varnish that might affect the adhering ability of the adhesive. Flat heads are always countersunk or rest flush with the surface. A thin layer of thinset adhesive is applied to the top of the plywood using a notched trowel, then the cement board is put in place and secured with flathead screws that are countersunk into the surface. Then secure with 1-inch drywall screws, making sure they are countersunk. Depending on how far the bolts stick out beyond the boards, we either countersink the nuts or wrap two layers of duct tape over the ends of the bolts to prevent damage to the greenhouse film. I used regular wood screws and countersunk them in the PVC to allow a flush surface. Fasten the bottom of each brace with a 6-inch machine bolt and countersink the washer and nut. Definition of countersink in US English: countersink verbˈkaʊn(t)ərˌsɪŋkˈkoun(t)ərˌsiNGk [with object] 1Enlarge and bevel the rim of (a drilled hole) so that a screw, nail, or bolt can be inserted flush with the surface. 扩大（钻孔）的端口使其成埋头孔；打埋头孔于 drill and countersink the hole for mounting the ladder to the wall Example sentencesExamples Drill and countersink screw holes for mounting screws. All the clamp holes of the panels were countersunk with this bit so that the screw heads are flush. Drill four 3/16-inch clearance holes in each rib before countersinking the top surface to bring the screw head flush. I've also countersunk the holes so no screwheads stick up later on. Construction began by countersinking the holes for the bolster rivets slightly. 1.1 Drive (a screw, nail, or bolt) into a countersunk hole. 把（螺丝钉等）钻入埋头孔 countersunk screw heads Example sentencesExamples You can even countersink and cover the screws with a dab of caulk. First, countersink the nails and swab the holes with a water repellent. Use a nail punch to countersink all nail heads approximately 1/8 ‘below the wood surface.’ Imagine driving a two-inch finish nail into solid oak with no predrilling and having it perfectly countersunk, all in less time than it takes to pick up a hammer. Just get plenty of screws in and make sure that they are countersunk and that they hit the studs. Flat heads are always countersunk or rest flush with the surface. Fasten the bottom of each brace with a 6-inch machine bolt and countersink the washer and nut. It's helpful to first pre-drill a small hole in the wood where you want to countersink the brass screws. After the first sanding, check to see if any nails are now protruding, and, if so, countersink them. Keep in mind, if you are using spring metal, that the nail heads should be slightly countersunk so that they do not catch on the opposite rail when the window is opened. Then secure with 1-inch drywall screws, making sure they are countersunk. Depending on how far the bolts stick out beyond the boards, we either countersink the nuts or wrap two layers of duct tape over the ends of the bolts to prevent damage to the greenhouse film. Search out any protruding nail heads and countersink them with a nailset. There is a second layer of plexi to attach to this, so I countersunk the screwheads so they were flush Nail heads should be flush with the surface, but not countersunk as it can cause the backer board to crack or break. When applying directly over an old floor, countersink any protruding nails and sand off any paint, wax, or varnish that might affect the adhering ability of the adhesive. To help prevent recurrence, countersink the nails and swab the holes with a water repellent. A thin layer of thinset adhesive is applied to the top of the plywood using a notched trowel, then the cement board is put in place and secured with flathead screws that are countersunk into the surface. I used regular wood screws and countersunk them in the PVC to allow a flush surface. Use 12 or 16 HDG finishing nails and countersink them with a nail set.
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