What's the difference between countersink and countersunk?
Countersink
Definition:
(v. t.) To chamfer or form a depression around the top of (a hole in wood, metal, etc.) for the reception of the head of a screw or bolt below the surface, either wholly or in part; as, to countersink a hole for a screw.
(v. t.) To cause to sink even with or below the surface; as, to countersink a screw or bolt into woodwork.
(n.) An enlargement of the upper part of a hole, forming a cavity or depression for receiving the head of a screw or bolt.
(n.) A drill or cutting tool for countersinking holes.
Example Sentences:
(1) Countersinking implants in extraction sites was critical; labial bone implant defects should be grafted with particulate HA.
(2) Screws will give a firm hold though you’ll need to pre-drill a hole with the 2mm drill bit and countersink the hole for a flush finish.
(3) With countersinking 55% of the 2.7 mm and 27% of the 2.0 mm screws had no threads engaged in the buccal cortical plate.
(4) Conical countersink showed plastic deformations of an average of 1300 N whereas with spherical countersink they did not occur at the same load.
(5) In case of bone cysts and thin corticalis they should provide further support against countersinking.
(6) The percussive patterning of the words serves to reinforce their meaning and to countersink them within the memory.
(7) After reaching the load of 2000 N and keeping the deformation constant we saw a significantly stronger reduction of force with the conical countersink then with the spherical type.
(8) You will need : Talc or chalk Drill 2mm and countersink wood bits 4mm x 50mm countersunk slothead screws Screwdriver Floorboard brads Hammer Punch 1) First lift any coverings there may be on top (carpets, vinyl etc).
(9) In vitro examinations on deformation and relaxation were carried out on cortical countersink of different geometry under a compression load of up to 2000 N through a screw head.
(10) As far as fracture fixation is concerned a smaller postoperative reduction of screw force can be expected if applying a cortical screw with a spherical head in a spherical countersink.
Countersunk
Definition:
(imp. & p. p.) of Countersink
(p. p. & a.) Chamfered at the top; -- said of a hole.
(p. p. & a.) Sunk into a chamfer; as, a countersunk bolt.
(p. p. & a.) Beveled on the lower side, so as to fit a chamfered countersink; as, a countersunk nailhead.
Example Sentences:
(1) Anterior cervical discectomy and fusion, using a countersunk interlocking autogenous iliac bone graft, is a satisfactory surgical procedure in which successful pain relief is to be expected.
(2) Refracture occurred in four adult patients as a result of minimal trauma, in two patients at the original fracture site after premature plate removal, at the site of a countersunk interfragmentary screw in one and at the original fracture site in another who had required three operative procedures to achieve 'union'.
(3) The purpose of this study was to evaluate the surgical results of anterior cervical discectomy and fusion using a countersunk interlocking autogenous iliac bone graft.
(4) The patellar component should have a saddle-shaped articular surface matching the femur and should be countersunk into the patella.
(5) You will need : Talc or chalk Drill 2mm and countersink wood bits 4mm x 50mm countersunk slothead screws Screwdriver Floorboard brads Hammer Punch 1) First lift any coverings there may be on top (carpets, vinyl etc).
(6) In one case the flexible implant and the grommets became countersunk into bone.
(7) The patellar component is now countersunk and the central post has been reduced in size.